Mercedes-Benz C300 vs Citroen C3

What's the difference?

Over five decades, the Mercedes-Benz C-Class has pivoted between mastery and mediocrity, and all-too-often relied on that three-pointed star up front to win over buyers.

Thankfully, the W206 is one is one of the better generations. It's easier on the eye, comfier to travel in, more intuitive to use, safer across the board and a huge improvement to drive. On the evidence of the C200 and C300 launch grades, there's newfound depth and consistency to savour.

Sure, prices have gone up, the C200 could use a bit more power, the steering could benefit from a bit more feel, the odd build-quality glitch made itself heard and there's a fair bit of road noise at times, but overall, the C-Class now deserves to be at the top of your luxury medium sedan shopping list.

Particularly if you can afford to stretch to the rorty C300.

The Citroen C3’s plus column contains some big ticket items like a solid standard equipment list, design flair, generous interior space, an eager engine, good safety and a comfy suspension. However, the minus side of the ledger isn’t exactly empty, with entries like steep price, marginal perceived quality, poor cabin storage, sub-par refinement, okay economy, and high ownership costs. 

But there’s no doubt this car delivers a different, adventurous take on the city-sized hatch, and for you, that alone may count for more than any of those things. 

If you're checking out the new C-Class for the first time from the front, you'll probably think… hmm, it looks just like the old one, and that's largely true.

But a side view reveals proportions that have changed significantly, thanks to the more raked windscreen, shorter overhangs and cleaner lines, which give it a slightly smaller S-Class look.

Which is more in fitting with where Mercedes wants to place this car against its 3 Series and A4 competitors.

Additionally, the taillights are split for the first time, allowing for a wider boot aperture since the lid now contains some of the lighting elements.

The shrunken limo looks aren't just the whim of some designer or Mercedes-Benz marketing department copywriter, either.

Underneath is an albeit highly modified version of the latest S-Class' MRA2 platform, which results in the longest (at 4755mm) and widest (at 1820mm) C-Class in the series' 40-year existence, as well as the first with this level of electrification capability.

Height and wheelbase dimensions also see a stretch, by 8mm and 25mm to 1450mm and 2865mm over the previous model respectively, and to the benefit of passenger accommodation.

Speaking of which, get used to this new interior aesthetic and general layout – it's a look that's probably going to filter through to most coming non-EQ-branded Mercedes models over the next few years.

From S to C to future E and A classes and beyond. It's a rare instance of trickle-down economics actually working!

If Citroen is known for anything it’s daring, innovative design. From the idiosyncratic 2CV, via the sleek DS, to the ultra-cool SM, and angular BX, Citroen boasts a 100-plus year back-catalogue of stunning automotive breakthroughs.

And true to form, the C3 sits left-of-centre with a determined, almost angry expression defined by chrome borders extending from its signature ‘double chevron’ logo above the grille.

A mix of carefully radiused curves, soft organic shapes and whimsical decoration define the rest of this SUV-ish hatch. Rounded rectangles and squares (squircles?) are a recurring theme, forming part of a dent-resistant panel along the car’s flanks and embossed into the door cards inside.

Our white test example sported a (no-cost) contrast red roof colour, the same shade picking out details like the front fog light surrounds, exterior mirror caps and side scuff panels. 

The interior is less bold with a multi-tone grey colour palette broken up by light green contrast stitching on the seats, as well as piano black finish on the centre console and satin chrome highlights around the air vents, instrument panel and door handles.

Plus, the squircle still makes its presence felt in everything from the directional air vents to the speaker grilles and sections of the dash.

Functionality and ergonomics are good with sensible touches like a physical knob for audio volume control (big tick) as well as easy-to-navigate controls for audio, phone and more on the steering wheel.

An unexpected highlight, and regular talking point with people in the car during my week with it, is what Citroen calls ‘Luggage-inspired’ front interior door handles. 

Check out the interior photos. The straps look amazing, are easy to use, and remind me of the handle on my mum’s circa-1965 Olympia portable typewriter.  

One of the best things about the new C-Class is that it's larger and therefore roomier than before. It's also higher quality, easier to use, more comfortable to sit in and - overall - more of a delight to behold.

In contrast, the old C-Class dash looked and felt like it was designed for a much cheaper car, especially compared to Audi's efforts.

Obviously related to the S-Class this time around, it's clear Tesla provided the inspiration for the twin floating screen look and layout, which are just right in their driver orientation and ease of functionality.

There's never really been anything wrong with Mercedes' old front seats, but these AMG Line items are both sumptuous and bracing, keeping their occupants well located ahead of the clever and thoughtfully laid out dashboard.

The brilliantly high-resolution MBUX multimedia and voice-recognition system now works as it should - intuitively and logically, with the screen menus simple to recognise and easy to use, and most without the need to get lost in confusing sub-menus. Just like BMW has managed for years.

If you want to change the instrumentation design, it's now a couple of clearly marked steps, using handily placed switchgear. The same goes for the superb climate control and audio systems. And the wireless Apple CarPlay/Android Auto connected faultlessly and worked a treat. Effortless see-and-push operation all round, backed by concise and classy graphics.

No more degree in Earth-to-Mercedes comm skills required to master this C-Class interior.

Yet there's just enough old-school Benz features to appeal to brand diehards, from the eternal door-card mounted electric seat controls and column-mounted gear shifter, to the deep centre console and turbine face-level air vents. They meld together beautifully with the advanced tech also on offer, like the optional augmented-reality head-up display with 3D-graphics.

Annoyingly, on one of our test cars, that tradition also extended to a couple of squeaks and rattles, proving that maybe Mercedes hasn't quite conquered all its past quality gremlins. And, like most luxury cars nowadays, endless ambient lighting choices are available of dubious taste.

Never mind. This is the finest C-Class front-seat environment since, well, probably the original W210 190E's of the 1980s.

And all those extra dimensions pay dividends in terms of interior space in the back seat.

There's plenty of knee room even with the tester sat behind their 178cm frame; head room is adequate even with the optional sunroof fitted, and there's ample shoulder space. So, it's more comfortable than any C-Class ever has been in terms of sheer dimensions.

Additionally, the rear backrest is well angled, while the cushion is deep enough to provide sufficient thigh support. But the centre perch is a bit of a squeeze for all concerned. Best avoided.

There's also added practicality to be found with the large and deep door pockets, front seat-back map pockets and folding centre armrest, that not only has a tablet holder, but when pressed in twice, also reveals sliding cupholders as well. Clever.

The C-Class rear seat is really lacking for nothing, with face-level air vents, overhead lighting, grab handles and coat hooks all highlighting the level of thought that went into making this a practical compact family sedan.

Plus, the C-Class comes with this folding ski port, which along with the folding rear seats, increases boot volume from 455L to, well, a lot more. While that's not quite as good as others like the BMW 3 Series, it's big enough for this car.

Note that there is no spare wheel, as the tyres are of the limited-distance runflat variety.

At a fraction under 4.0m long, just over 1.8m wide, and close to 1.5m tall, the C3 is a small hatch that, in terms of practicality, does well in some areas and could do better in others.

On the plus side, there’s plenty of space for the driver and front seat passenger, and rear room is surprisingly generous. Sitting behind the driver’s seat, set for my 183cm position, I had more than adequate head, leg and knee room.

Three full-size adults across the rear is a short-journey proposition only, but a trio of up to mid-teenage kids will be fine.

The space-efficiency carries over to the boot, with 300 litres of volume available (below the parcel shelf) with the 60/40 split-folding rear seat upright. But beyond that number, the space has been carefully sculpted to maximise usability.

We managed to fit our three-piece (36L, 95L, 124L) luggage set in there, with a small cheat of removing the divider, and could swap them out for the bulky CarsGuide pram, with room to spare. Fold the rear backrest down and available space increases to an impressive 922 litres.

The downside is storage and concessions to comfort elsewhere in the car. As in, a lack of them.

For a start, the dual cupholders in the front centre console confirm the French’s affection for Espresso. You’ll struggle to locate an average size take-away coffee cup in one of those dainty receptacles.

The front door bins are long but relatively narrow, and lack a designated spot to hold bottles upright, so I found myself laying drink bottles horizontally along them, which is awkward.

Plus, there’s no lidded storage box between the front seats, so no centre armrest, either. Rather an open tray behind the handbrake lever.

The glove box is modest, there’s a small open cubby below the central multimedia screen that isn’t big enough to hold a phone, there’s just one USB-A port for connectivity/power and a single 12V outlet.

No fold-down centre armrest in the rear, either. There are map pockets on the front seat backs, a single (again, small) cupholder at the end of the front centre console for back-seaters to share, and while rear door pockets are welcome, they’re petite.

Yes, the boot is commodious, but it lacks tie-down anchors to secure loose loads, and the flimsy carpet in there is prone to moving around.

On a more positive note, the spare is a 15-inch space-saver, which is streets ahead of the all-too common inflator/repair kit.

The Citroen C3 is offered in a single Shine grade, and lines up against a slew of similarly city-sized hatches from China, Europe, Japan and South Korea. Think Kia Rio, Mazda2, MG3, Suzuki Swift, Toyota Yaris, and VW Polo. 

But when it comes to its price - $32,267, before on-road costs - you’re looking at primo competitors only, like the Suzuki Swift Sport Turbo ($30,990), Toyota Yaris ZR Hybrid ($32,200), and VW Polo Style ($31,250).

And to tempt you away from those more mainstream options, Citroen loads up the C3 with a solid list of standard equipment.

Aside from the safety tech covered later in the review, this small hatch features keyless entry and start, cruise control, a 10-inch colour multimedia touchscreen (with voice recognition across multiple functions), climate control air, a leather-trimmed steering wheel, six-speaker audio (with digital radio as well as Bluetooth, Apple CarPlay and Android Auto connectivity), built-in sat nav, LED headlights and daytime running lights, rain-sensing wipers, and 16-inch alloy wheels. 

Not too shabby, but bear in mind, as is often the case in this class, the trim is cloth, the front seats adjust manually and the instruments are conventional analogue. 

At this point, it’s important to mention ‘perceived quality’, a term used in various industries to describe the look, touch and feel of a product. And it’s here that the C3 suffers. 

Open the tailgate, look to the pillar on the right-hand side of the rear windscreen (from the inside) and you’re confronted with more than half a dozen spot weld craters that have creased the sheet metal to varying degrees. Not to mention a crude fold of the outside panel onto this interior piece. Perfectly functional, but not a good look.

The elastic cords suspending the cargo divider at the top of the boot space feel as insubstantial as the thin metal hooks they’re attached to, and the finisher matt sitting on top of the engine looks like it won’t stand the test of time. 

There are other examples, but suffice it to say, the overall feel is not in the same league as this car’s main competitors.

Probably the biggest departure compared to any previous C-Class is this generation's switch to direct-injection four-cylinder-only powertrains – including the coming Mercedes-AMG high-performance versions. Now that should be interesting.

As mentioned earlier, the C200's four-cylinder turbo engine is now about 25 per cent smaller in capacity, down from 2.0L to a 1496cc 1.5L twin-cam 16-valve turbo engine. Dubbed the M254, it pumps out 150kW of power at a high 6100rpm and 300Nm of torque between 1800-4000rpm.

That's not to say it's lacking in muscle, though, since it can sprint from zero to 100km/h in 7.3 seconds, on the way to a 245km/h top speed. These outputs are at least a match for the bigger-engined 3 Series and A4 equivalents, by the way.

If it's more you want, then the C300 features a 1999cc 2.0L turbo version of the M254, delivering 190kW at 5800rpm and 400Nm between 2000-3200rpm. This slashes that 0-100km/h time to a speedy six seconds flat. There's also an extra 20kW of overboost available for short periods if you're really in a hurry, while - where legal - it's possible to hit 250km/h.

Both send drive to the rear wheels via a nine-speed torque-converter automatic transmission, while the 48V mild-hybrid system, dubbed EQ Boost, employs an integrated starter-generator and lithium-ion battery that provides an additional 15kW and 200Nm of electric boost at low engine speeds.

So, while it doesn't ever run purely on electricity, the electrification tech certainly either brings more punch or takes the load off the petrol engine, depending on how you're driving it.

The Citroen C3 is powered by a small-capacity (1.2-litre), turbo-petrol, three-cylinder engine, driving the front wheels through a six-speed automatic transmission. 

This little unit punches well above its weight thanks to tech like direct injection, and dual variable valve timing to enhance pulling power. The lightweight (all-alloy) unit produces 81kW of power at 5500rpm and a substantial 205Nm of torque at just 1500rpm.

Remember when I said that the C-Class moved to an all-four-cylinder engine range? Well, that's primarily to help it better meet fuel consumption, efficiency and lower emission targets.

On the Australian combined fuel consumption cycle, the C200 manages 6.9 litres per 100km – and that's extremely impressive for a medium-sized sedan weighing almost 1.8 tonnes. So is the fact that the larger-engined C300 returns only 0.4L/100km more at 7.3L/100km. Fitted with a 66-litre tank, these numbers suggest that the former can average nearly 960km between refills while the latter can manage just over 900km.

These figures translate to averages of 157 and 164 grams per kilometre of carbon dioxide emissions respectively. On the flipside, both these Euro-6 emissions rated engines require 98 RON premium unleaded petrol to deliver their best.

So much for lab tests. Out in the real world, we drove both cars for several hundred kilometres on a hot summer's day, from inner Melbourne during peak-hour traffic, to some great curvy rounds out in central Victoria, featuring some tight corners and ample opportunity to really stretch both cars' legs.

Over these routes, we averaged an indicated 8.4L/100km in the C200 and – astonishingly – 7.4L/100km in the C300. Yes, the larger and more powerful engine proved more economical.

Clearly, along with the advanced aerodynamics, engine stop/start system and 48V mild-hybrid tech, all that downsizing works. No wonder Mercedes deemed it unnecessary to bother with diesel engines for this generation C-Class.

Citroen’s official fuel economy number for the combined (ADR 81/02 - urban, extra-urban) cycle is 5.2L/100km, the 1.2-litre three-cylinder emitting a modest 118g/km of CO2 in the process.

Our time with the car included mainly city and suburban trips, with some freeway running thrown in, and the result was a (dash-indicated) average of 8.0L/100km. Not exactly miserly, and points to the turbo triple having to work pretty hard to keep up around town.

Minimum fuel recommendation is the relatively pricey 95 RON premium unleaded, but you’ll need just 45 litres of it to fill the tank. Using the official consumption figure, that translates to a range of 865km, dropping to around 560km using our real-world number.

There has been a philosophical shift in how the C-Class is presented.

Even with their standard-in-Australia AMG Line package, the regular grades like the C200 and C300 are now leaning into the brand's luxury heritage, while the BMW-baiting sports sedan versions will be left to the coming AMG versions.

And this in turn profoundly informs how the W206 drives.

Even with the optional Sports Pack on 19-inch wheels, the C200 as tested finally feels like a premium midsized sedan experience. Muted at start up, the 150kW/300Nm 1.5L turbo steps off the line smartly and smoothly, its nine-speed auto shifting effortlessly through the gears to keep the engine feeling lively and lusty.

Around town it's easy to mistake the engine as a larger-capacity unit, since throttle response is instantaneous, with little to no lag detectable. It's a strong start for a base powertrain, especially as the C200 settles into a relaxed cruise at freeway speeds. Cycling through the driving settings also reveals how feisty the 'Sport' mode is.

But the 1.5L's lack of size becomes obvious the moment you need to overtake quickly, or when a quick squirt of acceleration up a hill is required, because the engine needs plenty of revs to approach that 6100rpm power peak. While still pretty brisk in these situations, it's also fairly vocal too, with a sense of having to work hard to maintain momentum.

Switching to the C300 highlights how much better suited the 190kW/400Nm 2.0L turbo is to highway driving, leaping forward with much more force and conviction, across the entire performance spectrum. In every metric, this is a better choice – throttle response, mechanical refinement, cruising ease. And the fact that the onboard computer showed less fuel consumption cements our preference for the larger-hearted C-Class.

In fact, both models possess a chassis that feels like it could do with a whole lot more power. Light and tight around town, the steering weighs up nicely at higher speeds, with a linear and reassuringly planted feel. The same also applies to how confident and controlled the Mercedes feels through fast, tight turns, yet settles into a relaxed and comfortable tourer along long, straight stretches of road.

It's a pity, then, that such dynamic agility and prowess doesn't really involve the driver, since the steering feels quite isolated from what's going on underneath; for the vast majority of C-Class buyers, that's fine. But, as a quick spin in any latest BMW 3 Series or Jaguar XE will reveal, there isn't an intimate, two-way connection going on here. That's probably going to be reserved for the AMG models.

Our C200 rode on bigger wheels and steel springs, while the C300 was fitted with optional adaptive dampers. In the previous-generation C-Class, the differences would be stark: a busy and jittery ride in the former, compared to soft yet still unsettled suspension in the latter.

That's all ancient history now, as even the 'passively' suspended C200 now isolates its occupants from the rough and tumble of our inconsistent roads. Still firmish, but no longer harsh.

And the C300 with adaptive dampers seems downright plush by comparison, while offering the driver personalisation options within the aforementioned driving models to tailor the steering, performance and engine sound settings that best suit the prevailing mood.

Too bad there's some road and tyre noise intrusion heard inside when driving over coarse bitumen roads. This is a common pitfall amongst German vehicles in Australia.

Still, it doesn't detract from the fact that the whole chassis set-up can at-last cushion and cosset occupants like, well, a mini S-Class.

Which is the whole point of the W206 C-Class. It now majors on comfort and reassurance like the better Mercedes-Benz models used to, while still being suave and sprightly enough to be a memorable – if not over-exciting – drive.

As a result, the C300 especially is a much-more likeable car than past iterations. Just remember to tick the adaptive damper option for the most optimal experience. Job well done, Mercedes.

The C3’s compact footprint and relatively light weight (1090kg) make it an urban-friendly option and outputs from the 1.2-litre turbo-petrol engine are exceptional.

Maximum torque of 205 Nm is plenty of pulling power from such a tiny unit, and with that number arriving at just 1500rpm it should be ideally suited to stop-start traffic. 

And yes, with enthusiast use of the right pedal the C3 gets up and goes pretty well, but refinement isn’t its strongest suit. 

The throttle can be jumpy unless you’re super smooth with it, the three-cylinder engine’s typically coarse note makes its presence felt under load, and the brakes need to be dealt with gently to avoid an overly aggressive stop.

Sure, familiarity and practice will help you get in tune with the car but it’s not a smooth ‘plug-and-play’ drive like the majority of its competitors.

That said, in true Citroen fashion, steering feel is good, the front seats are as comfortable as they are supportive, while the suspension manages to blend plush compliance with excellent dynamic response. Another Citroen hallmark.

The six-speed auto shifts smoothly, with a press of the Sport button encouraging it to shift up later and down earlier for a more urgent response. But the zig-zag (my term, not Citroen’s) shift pattern makes for an awkward shuffle between D, N and R when parking. No doubt you’d get used to it, but I’m not a fan.

Speaking of parking, the C3's diminutive size makes it easy to slot into even tight spots, the standard front and rear proximity sensors, as well as a decent resolution reversing camera helping out, too.

The Citroen C3 scores four out of five ANCAP stars courtesy of testing dating back to 2017.

The sticking point was a sub-par result in Pedestrian Protection, one of the independent safety body’s four main assessment areas (beside Adult Occupant Protection, Child Occupant Protection, and Safety Assist).

Specifically, potential pedestrian head injuries resulting from contact with the base of the windscreen and “stiff” windscreen pillars.

But Citroen hasn’t left the C3 standing still with active (crash-avoidance) tech fitted to the current model including the usual suspects like stability and traction controls as well as more sophisticated systems like ‘Autonomous Emergency Braking’ (AEB), forward collision warning, blind-spot monitoring, lane departure warning, ‘Driver Attention Alert’, a reversing camera (with zoom function), and tyre pressure monitoring. 

That said, although there are parking sensors front and rear, there’s no cross-traffic alert (front or rear), no adaptive functionality on the cruise control, and no lane change assist. Arguably unrealistic to suggest all of these should be included at this price point but it’s worth noting not all boxes are ticked.

If a crash is unavoidable there are six airbags on-board (driver and front passenger front and side, plus full-length side curtain). The hazard lights automatically activate when emergency braking force is applied, but multi-collision brake, which reduces the chances of further impacts after an initial crash, is missing-in-action.

There are three top tethers for child seats or baby capsules across the back seat, with ISOFIX anchor points in the two outer rear positions. 

Kudos to Mercedes-Benz for being the first luxury manufacturer in Australia to offer a five-year/unlimited kilometre warranty – matching most other mainstream makers. Lexus and Audi have only recently followed suit.

A five-year roadside assistance subscription is also included. Service intervals are 12-monthly or at every 25,000km, whichever occur first.

Additionally, a four-year capped price service plan is available, at $550 for the first year, $900 for the second, $1000 for the third and $2450 for the fourth, totalling $4900.

Alternatively, buyers can also choose three pre-purchase service plans to save a bit of money, but these must be bought prior to the first service.

Citroen covers the C3 with a five year/unlimited km warranty, which is cost-of-entry now in the mainstream market, and roadside assistance is included for the duration.

Service is scheduled for 12 month/15,000km intervals, with costs capped for the first five workshop visits. The average annual figure over that period is $505, which is way more than double the $205 you’ll pay annually for servicing a Toyota Yaris ZR Hybrid. Sacre bleu!