Audi Q3 vs Mercedes-Benz GLC300

What's the difference?

So is this new Q3 good enough to remain Audi’s number one choice? In a word, yes.

Audi has resisted the temptation that some brands fall into by making too many changes to a proven sales performer. This new Q3 isn’t radically different from the old Q3, but it has improved in almost every way.

It isn’t different enough to widely expand its appeal to a new wave of customers, but there’s no reason it won’t remain Audi’s most popular choice for the foreseeable future.

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

The GLC300 Coupe isn't quite as great when it comes to being a family car as the regular SUV version of the GLC, and that's purely down to the sloping roofline which not only makes access more difficult to the second row but reduces boot capacity.

That said, the GLC300 Coupe makes a much better family car than a Mercedes-Benz C-Class sedan, or any sedan.

Easy and enjoyable to drive, packed with great features and still practical, the GLC300 Coupe would still cut it as a good family car.

The brief to the designers was seemingly pretty simple - don’t mess with a good thing.

According to the company, they want it to be recognisable as an Audi from 100m away, but at the same time, it makes sense not to make any radical changes to a design that is clearly a hit with buyers.

There’s still a new grille, which is slightly larger, while the daytime running lights (DRLs) are now mounted high, on the top corners of the front fascia.

Audi prides itself on its lights and the Q3 features multi-segment DRLS, with dynamic light effects, plus the rear badge lights up red with the tail-lights are turned on.

Digital matrix LEDs are available as an option on the quattro grades, which is a first for such a small Audi. While based on the technology already deployed in the bigger, more expensive Audi models, this is an updated system with micro LED matrix capabilities that are better able to light up the road ahead without blinding cars ahead or oncoming.

One very noticeable element to the design of this new Q3 is the size - which hasn’t really changed. Audi has resisted the temptation that so many brands have to upsize a compact model and has instead retained the same size that buyers clearly find appealing. It is slightly longer, approximately 4cm, but is still unmistakably a Q3 in looks and size.

Inside the Q3 is a different story, with the designers clearly empowered to create more change. The elements remain similar, but there have been more dramatic changes compared to the exterior to keep the Q3 looking contemporary and luxurious.

For example, there are still two large screens, just like the old model, but the virtual cockpit and multimedia screen are integrated into the dashboard together and more prominently, moving higher up the centre fascia.

It works well, as the interior looks and feels premium, and very much an Audi, albeit on a smaller scale.

To cap it off there are four interior colour packages to choose from, plus four different choices for the inlays, including two real wood options and an aluminium trim.

Coupe SUVs aren’t for everybody… they’re not even for lots of people. But the design of an SUV with its roof cut down so that it meets the tailgate at an almost sportscar-like angle appeals to more than a few fans. The thing is they don’t just like the look, they love it, and they also probably enjoy how much the styling makes other people cranky.

To my eyes the GLC300 Coupe is the best execution of the bodystyle compared to those of BMW and Audi. There’s an elegance to the GLC300 Coupe and the AMG-line adds a tough look that only enhances the solid, powerful but pretty look.

The GLC Coupe is a mid-sized SUV and this new generation model is a bit bigger the previous one and now measures 31mm longer at 4763mm end to end, it’s 1890mm wide, 1605mm tall and has a wheelbase of 2888mm.

It’s also more aerodynamic than ever. No seriously, it’s drag coefficient is now 0.27 and it looks like a bar of soap - and it's about as slippery as one, too.

More curved surfaces await inside with a dashboard that pours down into the large centre console and it's adorned with a sloping and large portrait-style media screen. 

At night or in tunnels the ambient lighting glows through the air vents and skirts the edges of the door trims, console and dashboard.

It’s a minimalist and high-tech cockpit with modern sports seats up front and a Nappa leather wrapped steering wheel with its twin blade design.  

So, how does the coupe design work for family practicality? Let’s take a look.

The biggest change to the interior is the technology, with a new multimedia interface with new, larger tiles as well as new ‘Control Unit’ for the key driving functions.

The ‘Virtual Cockpit’ display is much simpler, with a nice, clean look, plus the option to have the satellite image on the screen, whether you’re in navigation or not. The multimedia screen is a good size (12.8 inches) and the menus are easy to navigate. The decision not to have physical controls for the climate control is disappointing, but thankfully there is a volume/on-off dial for the sound system.

The most notable difference is the so-called ‘control unit’ that integrates the indicators, wipers and gear selector on a single ‘bar’ mounted to the steering column. It’s another example of modern cars reinventing something we’ve all become accustomed to, but after a day of driving it quickly becomes second nature to adapt to the slightly different controls.

While it may be the same size, Audi has managed to find more room inside, particularly the rear, by redesigning the door pockets and sculpting out the seat backs. It’s still not the roomiest cabin, but the rear seats will be fine for younger families, couples and singles.

Another plus is the 40:20:40 split/fold rear seats for maximum practicality and adaptability, while all three have child seat anchor points (although if you do have three small children, I wouldn’t be recommending an SUV this size). 

As for the boot, because Audi only measures to the top of the seats, it measures 488L in both the SUV and Sportback variants, so you’re not missing out on day-to-day practicality with the sportier-looking roof. However, if you drop the rear seats the cargo capacity expands to 1386L in the SUV but only 1289L in the Sportback.

SUVs are the most practical cars for families because of the better access to the cabin thanks to their large doors and slightly elevated ride height, their big boots with wide and tall hatch openings and their high flat rooflines. They’re essentially raised station wagons.

A coupe-style SUV still has four doors but they are less boxy due to the sloping roofline which falls away quickly to meet the tailgate at a lower point. The effect is a sporty-looking shape but practicality is lost in this exercise of form over function.

The second row doorways aren’t as large as those on the regular SUV. I did a side-by-side test and felt like I had to duck under the sloping roof when getting out of the back seat.

The smaller opening also made it trickier to lift my toddler daughter into her baby seat.

The sidesteps are also surprisingly handy for bigger kids and my eight-year-old used them every time when climbing into the car.

Cabin storage is outstanding with huge door pockets and cupholders in both rows, and while the 545-litre boot in the GLC300 Coupe is 80 litres smaller than the cargo capacity of the regular GLC SUV, it's bigger than the previous version of the Coupe.

As for people space, there’s enough headroom for me at 189cm tall in the back seat and heaps of legroom, even behind my driving position.

I’ve mentioned the lack of climate control in the second row, but also should point out that there are no USB ports back there either.

There are USB ports in the big centre console box upfront and a long cord should be able to make it to the second row. 

There’s a wireless phone charger but it's housed in the bowels of the centre console too, and you’ll need to weave your hand while clasping the phone under the shiny black trapdoor, past the cupholders possibly with drinks in them and almost under the dashboard.

Mercedes-Benz is offering Australia just the GLC300 grade in both the SUV and Coupe body styles.

High-performance AMG variants are out overseas now and will arrive in Australia soon, too.

You can expect to pay more for these AMG beasts - a lot more than the $113,900 list price of the GLC300 Coupe.

Still the GLC300 Coupe does come standard with an AMG Line body kit and 20-inch AMG alloy wheels. LED headlights are also standard, so is the panoramic glass roof, tinted rear glass, proximity unlocking and a power tailgate.

Inside there’s synthetic leather Artico upholstery, sports heated front seats, Nappa leather steering wheel, an 11.9-inch media display with Apple CarPlay and Android Auto, a 12.3-inch digital instrument cluster and a head-up display. There’s also dual-zone climate control and wireless phone charging.

The value is good in terms of features, although the price is slightly higher compared to the rivals such as the BMW X4 xDrive30i ($106,400) and Audi Q5 Sportback 55TFSI ($110,200).

It’s worth pointing out, too, that the GLC300 Coupe is about $10K more than the GLC300 SUV version. Why? The coupe versions of prestige SUVs always tend to be pricier than their regular more boxy SUV siblings. Somebody in marketing will be able to explain why.

Having lived with the GLC300 Coupe with my family over the past few days I can say the proximity unlocking which works by touching even the back door handles is excellent, the tinted windows are dark and cut out much of the sun's glare, but there’s no climate control in the second row. There are air vents back there, which is good.

I found that on hot days the semi-transparent shade on the glass roof couldn’t stop the cabin from heating up quickly.

As mentioned above, there are three powertrains to choose from initially, with talk of a plug-in hybrid and hi-po RS Q3 just that (talk) for now.

The entry-level SUV and Sportback get a new 1.5-litre four-cylinder mild-hybrid, turbocharged petrol engine, which makes 110kW/250Nm and sends all that performance to the road via the front wheels through a seven-speed, dual-clutch automatic transmission.

Next up is the TFSI 150kW quattro, which is a bigger 2.0L turbo-petrol four-cylinder, producing (you guessed it) 150kW and 320Nm. It also has a seven-speed dual clutch but also unsurprisingly has a quattro, aka all-wheel drive.

Finally there’s the TFSI 195kW quattro, which has the same engine but tuned to make 195kW and 400Nm, also with the seven-speed, dual-clutch auto and all-wheel drive.

This is naturally the quickest Q3, at least until the RS Q3 arrives, taking just 5.7 seconds to accelerate 0-100km/h, compared to 9.1 seconds for the 110kW and 7.1 seconds for the 150kW.

The GLC300 Coupe has a 2.0-litre four-cylinder turbo-petrol engine making 190kW of power and 400Nm of torque.

There’s also an overboost function which allows the engine to make an extra 17kW and 200Nm just for a brief moment, but that extra dollop of grunt combined with the regular output provides impressive acceleration (0-100km/h in about 6.3 seconds) for overtaking or moving quickly when you need to.

A smooth nine-speed automatic transmission sends the drive to all-four wheels.

The GLC300 Coupe is all-wheel drive and while there’s a setting for rougher terrain, along with one for comfort, eco and sport, but I’d make sure that it doesn’t get any more adventurous than tame gravel and dirt roads.

Mercedes-Benz refers to the GLC300 Coupe as a mild hybrid and this is because it has a 48-volt system and an integrated starter-generator.

This type of hybrid doesn’t use electric motors, doesn’t drive the wheels and won’t save much fuel, but it will provide efficiencies by supporting the engine and when coasting, plus will reduce petrol consumption to a small degree.

While it may only be a mild hybrid, Audi has done its best to make the TFSI 110kW as fuel efficient as possible. To that end, in addition to the hybrid help this new 1.5-litre engine also features cylinder-on-demand.

The result is a claimed combined cycle fuel use figure of 5.7L/100km for the entry-level model.

Naturally the more powerful engines require more petrol. The 150kW models are rated at 7.3L/100km, while the 195kW has a claimed 8.1L/100km.

It’s worth noting that all three engines require a minimum 95 RON ‘premium’ fuel, which will only add to the cost at the pump in these times of high prices.

The 110KW/150kW models are fitted with a 55-litre fuel tank, while there is a bigger 60-litre tank for 195kW. That means theoretical driving ranges of approximately 960km for the 110kW models and just over 740km for the 150kW and 195kW offerings.

As we mentioned above the GLC300 Coupe's 48-volt mild hybrid system is not the kind of hybrid that will allow you to drive miles on electric power, nor will it dramatically reduce fuel consumption in the way a parallel, series or plug-in hybrid will. But every bit of efficiency helps.

Mercedes-Benz says the GLC300 Coupe will use 7.7L/100km after a combination of open and urban roads. 

We had the GLC300 Coupe for just two days, but in that time my family covered 176km of regular daily usage which took in motorways but mainly suburban duties such as the school run, supermarket dashes, that sort of thing.

In our fuel test we measured 14.48 litres at the fuel pump which works out to be an on-test fuel use figure of 8.2L/100km and not far off the manufacturer’s claim. 

While this fuel consumption isn’t overly high, a plug-in hybrid or even a parallel or series hybrid could return about 5.0L/100km or less.

Mercedes-Benz has dropped plug-in hybrids from its Australian range which is a shame because it would be good to see more efficient options in the GLC range. Of course if you want more efficiency from a Benz of the same size, there is always the fully electric EQB or EQC.

While it may not be an RS model or a more dynamic sedan, part of the price premium you pay for an Audi is a more polished driving experience.

With that in mind, what Audi calls ‘Progressive steering’ (which is a variable ratio steering rack) is now standard across the range. This decision was driven by a desire to make the Q3 feel ‘more hatch-like’ to drive, being more responsive to driver inputs.

It certainly felt quite nice to drive at the launch, where we drove across a wide variety of conditions, including long stretches on winding mountain roads. The 110kW Launch Edition was enjoyable to drive in these conditions, even if the other two options offer a sportier driving experience with their extra power and all-wheel drive.

It should be noted again, we only drove Q3s fitted with adaptive dampers as those are included on the Launch Edition, so we can’t tell you how the true entry-level TFSI 110kW model rides and handles.

One minor concern was there were some rattles in one of the three cars we tested, centred around the dashboard and front doors. It’s notable because we have experienced similar potential build-quality issues with Volkswagen and Skoda products recently. This raises some questions about an area Volkswagen Group products have traditionally excelled in.

Having said that, it was only a problem in one of the three cars we drove, so it could be an isolated incident. But it’s something we will have to keep an eye and ear open to in future test drives.

There’s a lot to like here but the short version is the GLC300 Coupe has a comfortable ride, but good handling, with a responsive engine, although rear visibility through the small back window is poor.

If we drill down a bit further I can tell you that excellent cameras around the car will help you check to make sure kids aren’t running around behind you and that forward and side visibility through the window is good.

An important takeaway is that the GLC300 Coupe is easy to drive with light steering and an engine that’s mild and controlled in its power delivery.

The gear shifter is mounted on the steering column, in the same way an indicator lever is. So putting the car into Drive, Reverse and Park is so easy and means you don’t have to take your hands off the steering wheel. 

As a family car I liked the good body control and composed ride. We have a small toddler that we can sometimes only get to sleep by taking her for a drive and we found that she could nod off and not be woken by potholes and speed bumps or too much leaning in the corners. 

The GLC was given the maximum five star ANCAP rating in 2022. There’s AEB, active lane keeping assistance and active blind spot warning and nine airbags including a centre airbag.

As mentioned above I especially liked the surround-view camera systems - which let you look right around the car - good for driveway safety and kids.

For child seats you’ll find two ISOFIX mounts and three top tether anchor points in the second row.

I was also impressed to see a space-saver spare wheel under the boot floor and not just a puncture repair kit. 

The Q3 is covered by Audi Australia’s standard five-year/unlimited kilometre warranty. This includes five years of roadside assistance too.

There is a standard five-year servicing plan for $3300, which is the same as the outgoing model, with servicing required every 12 months or 15,000km, whichever comes first.

Audi has an expansive, nationwide dealer network befitting its place as an established sales leader in the premium space.

The GLC300 is covered by Mercedes-Benz's five-year, unlimited-kilometre warranty. 

Services are annually or every 25,000km. And you can buy a three-year service plan for about $3000.