Mercedes-Benz CLA-Class vs Audi Q5

What's the difference?

The new AMG C 43 may lack the drama and excitement we’ve come to expect from the German performance brand, but that doesn’t mean it’s a bad car. Yes, it could be more extroverted and the ride could be improved, but this is still a sharp-looking sports sedan with loads of punch.

This is a car that speaks to its times, with ever-stricter emissions regulations making it harder and harder for car companies to produce loud, wild and charismatic cars. So Mercedes-AMG has worked within those boundaries and come up with a car that retains at least some of those core elements that has made the brand so desirable over the years.

Note: CarsGuide attended this event as a guest of the manufacturer, with accommodation and meals provided.

The updated Audi Q5 Sportback TFSI is a strong example of a luxury base-grade SUV, ticking most of the boxes in styling, comfort and features. It may not always outperform its rivals on paper, but it delivers where it counts, offering a refined, practical and engaging package that will satisfy.

Mercedes has created something of a problem for itself with its decision to introduce AMG styling packages for the majority of its range, including the C-Class.

It means the C 43 has to walk a fine line between looking like a unique AMG model, rather than just a C300 with a bodykit and not out-doing the C63.

To that end it has AMG’s now familiar grille with vertical bars, the unique and complex-looking 20-inch alloy rims and a small lip spoiler on the boot. But otherwise it is surprisingly understated for an AMG, lacking the more obvious and muscular stance of previous AMG offerings.

Inside, there’s a similar theme, with the typical Mercedes-Benz luxury appointments but with a sportier, AMG twist. The steering wheel is chunky and comes with AMG branding, metallic shift paddles and a pair of rotary dials/buttons that allow you to alter the various drive modes and settings.

The one on the right allows you to switch between the pre-set Comfort, Sport, Sport+ and Individual modes, while the one on the left can scroll between the various individual aspects to tailor the settings to the conditions.

In typical modern fashion the design is tech-laden, with a digital display for the instrument panel (that can be switched between various graphics) and a large, tablet-style central multimedia touchscreen that controls the majority of the car’s non-driving functions.

The Q5 Sportback is the more attractive sibling when compared to the standard SUV, with a shape that feels more dynamic and sport-oriented. The updated design dials back the sharper creases of the previous model in favour of softer curves, paired with slim matrix LED headlights. The revised 'Singleframe' grille has strong presence and the full-width rear light treatment adds to the Sportback’s visual appeal. Overall, it’s a very handsome vehicle.

Inside, the interior glow-up is immediately noticeable. The large new display takes centre stage in a redesigned dashboard that looks clean and appropriately sophisticated. 

There’s a good mix of materials throughout the cabin, including the beige leather upholstery, although the presence of hard plastics reminds you that this is still a base grade. Even so, the cabin largely hits the right notes for a luxury entry point.

There are a few details that don’t quite land for me. The door-mounted control panel on the driver's side feels busy and a little fiddly to use, and creates an oddly sized and positioned pull handle that just doesn’t feel nice to use. And this is very much a nitpick, but the black stitching on the beige seatbelts catches my eye all the time. None of these are deal-breakers, but they stand out in an otherwise well resolved interior.

The new C-Class has grown slightly in size compared to the model it replaces, most notably with a 26mm increase in the wheelbase which you can feel in the cabin.

The front seat space is good, with excellent adjustability for the power-adjustable seats and steering column. I had no trouble finding my ideal seating position which makes for a more enjoyable and uncompromised driving experience.

Rear space is a bit tighter (which is typical for this segment/size of vehicle), but thankfully the standard seats do have very deep sculpting in the backs which allow for more knee space and foot room.

However, at approximately 180cm (six-foot), I wouldn’t like to sit behind my seating position for long periods as my knees were touching the seat back, and headroom is compromised with the panoramic glass roof.

In terms of small item storage there’s a lidded console box in between the front seats as well as a pair of cupholders and a small tray where you can place your mobile phone.

It’s worth noting, though, that early examples of the C 43 in Australia do not have a wireless smartphone charging pad, with that reportedly being introduced from February production.

While that’s good news, it’s not really competitive in this day and age to offer a car costing six-figures without such technology.

There’s also only a single USB-C power outlet in the front, which is another disappointment, but there is a pair in the back.

Mercedes does win some points back for a respectable 455-litre boot, which has a nice wide load opening that will make packing luggage easier.

Up front, the cabin feels spacious and comfortable, with plush (heated) electric seats, while the driver also benefits from a two-position memory function, which is a plus if the car is shared. My main gripe is the short seat bases, which become noticeable on longer drives.

In the rear, comfort largely holds up, though space is better suited to two adults due to the high transmission tunnel. The 40/20/40 split-folding rear seat is a practical inclusion and helps when juggling passengers and longer items.

Storage is mostly well considered. There’s a generously sized glove box and a couple of useful storage bins in each door, although the centre console is on the smaller side. The dedicated phone tray is a highlight, housing the wireless charging pad, two USB-C ports and a 12-volt socket. Both rows get cupholders and bottle storage, while rear passengers also benefit from USB-C ports, climate control, directional air vents and map pockets. Overall, there’s just enough space and amenity for adults or teens to remain comfortable.

Technology is handled by the updated media display, which features a responsive touchscreen and a menu system that’s easy enough to navigate. Wireless Apple CarPlay and Android Auto are quick to set up, and the built-in satellite navigation is clearly laid out. That said, the near-total absence of physical buttons may frustrate some, with functions like climate control buried within the touchscreen. The number of pop-up disclaimers on start-up also feels excessive.

Boot space is where the Sportback’s sloping roofline has the biggest impact. Load height is limited, and capacity tops out at 515L with all seats in place, making it the smallest in its segment, albeit only by around 10L. I like the deep underfloor storage, along with the cargo cover, net and hands-free powered tailgate. However, the lack of a spare tyre, replaced by a repair kit, is a deal-breaker for me as a country driver, though it may matter less to those with easier access to repair services.

The Audi Q5 Sportback is offered with a choice of petrol or diesel engines, across two grades before stepping up to the more powerful SQ5 variants. For this review, we’re testing the base petrol TFSI grade, which is also the only front-wheel drive option in the line-up.

It carries a before on-road costs price of $84,500 and comes well stocked with features that often sit on the options list with key rivals. Aside from the Genesis GV70 2.5T, which remains hard to beat for standard inclusions, the Q5 Sportback TFSI stands out as one of the better value propositions at this price point.

New for this update is a large panoramic display that combines an 11.9-inch digital instrument cluster with a 14.5-inch central media screen. The system includes built-in satellite navigation, wireless Apple CarPlay and Android Auto and access to the 'Audi Connect' app. The app allows access to remote services like locking/unlocking to car, checking fuel/charge levels, sending navigation routes, car finder and monitoring vehicle status (warnings, last parked location).

Our test car is fitted with optional 'Pearl Beige' leather upholstery, which is a no-cost option. New design elements include a full suite of LED exterior lights, including matrix LED headlights and side puddle lamps.

Comfort is clearly a priority in this grade, with electric and heated front seats featuring lumbar support and a two-position memory function for the driver. Three-zone climate control, a wireless charging pad, multiple USB-C ports and 12-volt sockets, along with a 360-degree camera system round out the major tech highlights.

Practical touches haven’t been overlooked either, with a hands-free powered tailgate, cargo cover and net plus a 40/20/40 split-fold rear seat set-up.

The biggest talking point about this new car is the engine, with AMG downsizing from the old C 43’s six-cylinder to a 2.0-litre four-cylinder turbocharged petrol engine.

But it’s not just any turbocharged four-pot, because it is fitted with technology that Mercedes claims has been inspired directly from its Formula One team.

While the F1 team engine facility is based in England, this engine was designed and developed by the Mercedes-AMG team at its Affalterbach headquarters, but the concept of the electric turbocharger reportedly comes from the engine that powered Lewis Hamilton to multiple world championships.

The electric exhaust gas turbocharger - to give it its official name - uses a small electric motor on the turbocharger shaft to spin up the blades without having to wait for any exhaust gases to pass through it first.

To power the electric turbo the C 43 is equipped with a mild-hybrid 48-volt electrical system.

Mercedes claims this means reduced lag and improved throttle response for a sportier driving experience. 

It also helps make this small engine produce big amounts of performance, with AMG extracting 300kW of power and 500Nm of torque from this 2.0-litre, which is more power than the previous six-cylinder C 43 managed.

The engine is paired to a nine-speed multi-clutch transmission, which isn’t a dual-clutch with a pair of clutches operating on every second gear ratio, but instead uses a “wet start-off clutch” for better take-offs and smoother shifting on the move (at least in theory).

Power is sent to the road via all four wheels thanks to Mercedes’ 4Matic all-wheel drive system.

The Q5 Sportback TFSI is front-wheel drive and powered by a 2.0L four-cylinder turbo-petrol engine paired with a mild-hybrid system. Combined outputs sit at 150kW and 340Nm, which places it toward the lower end of the segment when stacked against rivals such as the Genesis GV70 2.5T and Mercedes GLC300 Coupe offering 224kW/422Nm and 190kW/400Nm, respectively.

On the road, however, there’s still plenty on offer for everyday driving, with power delivery feeling smooth and accessible. The seven-speed transmission shifts effortlessly, helping the Q5 Sportback feel refined and easy to live with, even if outright performance isn’t its headline feature.

Despite the smaller engine you can hardly call the C 43 miserly, with a claimed combined urban/highway cycle rating of 9.1-litres per 100km. That’s only a 0.2L/100km improvement over the old six-cylinder.

On test, which included a return trip from Sydney to Bathurst via motorways and some dynamic back road driving, we saw a return of 11.8L/100km on the car's onboard computer.

While hardly hybrid-worrying, it’s impressive to think that driven modestly, such a potent engine can return a single-digit fuel figure.

The Q5 Sportback TFSI has a claimed combined (urban/extra-urban) cycle fuel consumption figure of 5.7L/100km and paired with its 65L fuel tank offers a theoretical driving range of up to 1140km. An impressive result on paper.

After a mix of long highway driving and my usual urban runaround, real-world consumption settled at 5.8L/100km, which is almost spot on.

It also highlights the Q5 Sportback TFSI’s performance/efficiency trade-off. While its outputs are modest relative to some rivals it rewards you with excellent economy in real-world use.

Let’s start with the good news. The new Mercedes-AMG C 43 is a quick car. The engine may be small in size but the electric turbocharger does its thing and provides plenty of punch.

You can get a performance boost, too, thanks to the belt-driven starter generator, which acts as a mild hybrid and gives you a surge of 10kW for a brief period if you need a sudden burst of extra speed.

The chassis is well-sorted, too, at least from a dynamic point-of-view. The rear-wheel steering can provide up to 2.5 degrees of turning, which improves handling at speed and manoeuvrability when parking.

However, there are some less-impressive elements to the C 43, too. The obvious one is the drama, or rather the lack thereof.

As I said at the beginning, the C 43 has never been as wild or raucous as the V8-powered C 63, but when you buy an AMG there’s a rightful expectation that it will provide some thrills.

The C 43 simply doesn’t have that character about it. Yes, it’s fast, but it produces that speed with efficiency rather than excitement.

And it’s not an engine size problem, because even the 2.0-litre four-cylinder A 35 and CLA 35 offer more ‘wow factor’ than the C 43.

Yes, the engine makes noise under acceleration (and it can be altered between discreet and sporty) but even at its best it sounds muted and lacks the evocative tone of a V8 or six-cylinder engine. 

Another disappointment is the transmission calibration, with the gearbox awkwardly shifting out of first gear on multiple occasions during our test drive.

In the taller gears it felt smooth enough cruising along, but given its low speed shifts we’d like to spend more time in the urban environment before passing final judgement. 

The other notable element of the driving experience we struggled with was the ride quality. While fine on the smoother motorways, our test drive included time on some patchy country back roads and the C 43, even in the ‘Comfort’ suspension setting, was simply too firm.

Riding on low profile tyres, the adaptive dampers struggled to isolate the cabin from the imperfections in the road, leading to a fussy ride at times.

Overall the C 43 is a good car, but it feels like there are still some areas where Mercedes could improve it to make it really live up to the AMG badge.

There’s enough power in the base grade to keep things engaging on the open road, whether overtaking or maintaining pace, with a reassuring sense of reserves and smooth, punctual delivery.

Despite the firmer suspension, ride comfort remains high thanks to the newly tuned damping system, which absorbs bumps without sacrificing road feedback. The cabin is quiet at speed and at low speeds the car can switch to its hybrid system for extra refinement.

I’m not a huge fan of the adaptive steering assist, particularly on winding roads, as it can overcorrect at times. Overall, though, the Q5 Sportback delivers enjoyable, sporty dynamics.

Visibility is good from the front and sides, while the rear window is a little on the small side. It’s easy to get accustomed to the car’s dimensions and a clear 360-degree camera view comes standard across all grades, providing a clear view that automatically activates during low-speed manoeuvres. Parking this car is straightforward and stress-free.

The Audi Q5 Sportback carries a fresh maximum five-star ANCAP safety rating from 2025 testing. It comes with nine airbags, including side-chest airbags for both rows which is a standout feature, as these are often limited to the front seats.

The safety equipment suite is strong, featuring lane departure warning, lane keeping assist, side exit warning, blind-spot monitoring, traffic sign recognition, dusk-sensing LED headlights and emergency call capability. There’s also front collision warning, rear cross-traffic alert with assist and rear turn-assist. Adaptive cruise control is generally well-calibrated, though it can occasionally slow for vehicles outside your lane.

Autonomous emergency braking covers cars, pedestrians, cyclists, motorcyclists, and backover assist which is operational between 5.0 and 250km/h. Child safety is supported with two ISOFIX mounts and three top-tether anchor points, although only two seats fit comfortably.

The C 43 is covered by Mercedes’ five-year, unlimited kilometre warranty, which has become the new standard for the luxury car market.

Service intervals for the car are at 12 months/25,000km, which is on par with industry standard.

Mercedes-Benz Australia will offer a service plan for the C 43, prices were yet to be confirmed at the time of publication but the company has indicated it will be similar to the C300. 

That means $550 for year one, $900 for year two, the third service costs $1000 and the fourth year service costs $2450 - for a total of $4900 for the first four years of ownership.

The Q5 Sportback comes with Audi’s five-year/unlimited km warranty, which also includes complimentary roadside assistance - all fairly standard at this end of the market. A five-year pre-paid servicing plan is available for $3520, which is cheaper than the pay-as-you-go option, though it’s not the most competitive compared with some rivals. For instance, BMW offers the same coverage for $2475, while the Genesis comes with complimentary servicing.

You can also extend the service period by two years with the 'Audi Advantage Package' for an additional cost. Services are spaced at sensible intervals, every 12 months or 15,000km, whichever comes first, making maintenance straightforward and predictable.