Mercedes-Benz GLC-Class vs Audi Q3

What's the difference?

Like I said right from the start, this new, hybrid version of the AMG GLC63 is technically superior to the model it replaces in every meaningful way. It is faster, more powerful and more fuel efficient and therefore a better performance SUV than the model it replaces.

Is it a better model than the one it replaces? Ultimately that will come down to how much stock you put into the soundtrack and your feelings on an AMG not powered by a V8 engine.

Because if you can see past that, then the AMG GLC63 is an absolutely fantastic performance SUV. Not only does the new powertrain make it faster in a straight line, but the chassis is very well-balanced, making for an engaging driving experience.

For those who can look past the smaller engine they will be rewarded with an incredibly fast and rewarding-to-drive member of the AMG family.

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

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 GLC63 is unmistakably an AMG from the moment you first lay eyes on it. That’s thanks to the AMG-specific elements, starting with the grille with vertical strikes and the AMG crest on the bonnet; which is now a signature item for the performance sub-brand.

The GLC63 is also fitted with the Night Package II design kit; this adds a darkened grille and black chrome badging to further enhance its visual appeal.

The AMG-specific alloy wheels and more aggressive stance do mean the GLC63 stands out from the rest of the GLC range, helping it look fast even when it’s standing still.

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.

Inside the GLC63 is clearly a derivative of the rest of the range, with its C-Class-inspired design and layout, but there’s enough AMG-specific elements to ensure it looks and feels special. This starts with the AMG steering wheel, which comes not only with a thick rim wrapped in Alcantara, but also some AMG special dials to adjust the various performance settings for the powertrain, suspension and transmission.

Then there are the AMG-specific seats, which look good and offer good support for the driver and front seat passenger. The rear seats offer decent space for what is a mid-size SUV, with room enough for two adults or teenagers or three smaller kids.

Those in the back aren’t particularly well looked after though, with only rear air-con vents and small door pockets but no USB charging ports or other small item storage.

The boot is 590 litres, down from 620L in the rest of the range, thanks to the addition of the rear-mounted electric motor. There’s also no room for the temporary spare the rest of the GLC range gets and instead you have to make do with a puncture repair kit.

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.

A key to the popularity of the Q3 is the variety of choices available to customers. By offering a mixture of variants at different price points and with different levels of performance expands the appeal of the Q3 to as many potential buyers as possible. To that end there are no less than 10 variants to choose from, and that’s just for now, with more likely to join in the future.

At this stage the range includes both SUV and Sportback body styles, the choice of a 110kW, 150kW or 195kW engine with front- or all-wheel drive (or quattro, as Audi calls it). While still not confirmed, both a plug-in hybrid and a high-performance RS Q3 are both likely additions sometime in the future.

Starting with the 110kW model, standard equipment includes 18-inch alloy wheels, adaptive LED headlights, ambient interior lighting, keyless entry and ignition, leather-appointed upholstery and a 10-speaker sound system. The 110kW SUV is priced from $61,600 and the Sportback from $64,600.

Moving up to the 150kW quattro variant adds adaptive dampers, which the 195kW models also get, as well as 19-inch alloy wheels, and there’s an optional premium Sonos system for the more powerful models and a panoramic glass sunroof and a head-up display as part of a $4400 option package. Pricing for the 150kW begins at $70,200 for the SUV and $72,700 for the Sportback, while the 195kW is priced from $81,900 (SUV) and $84,400 (Sportback).

There’s also a Launch Edition available which adds between $5400 and $4400 to the price (depending on variant), but includes the S line exterior styling package, black exterior highlights, metallic paint, red brake callipers, a sound actuator and adaptive dampers. As the name implies, these are only available for launch of the new model, so will only be produced for the first two months.

It should also be noted that standard 110kW models won’t arrive until mid-year, once the factory in Europe is done producing the Launch Edition variants.

This is what lies at the heart of the AMG GLC63’s success or failure. As I mentioned at the beginning, the previous generation’s 4.0-litre twin-turbo V8 has been replaced by an F1-inspired plug-in hybrid powertrain.

But don’t think that means AMG is suddenly focused on efficiency over performance. When AMG says the powertrain is inspired by the brand’s success in Formula 1 racing, what it means is the battery and electric motor provides a significant performance boost to support the internal combustion engine, not just save fuel.

To that end the combination of the turbocharged 2.0-litre four-cylinder petrol engine and the rear-mounted electric motor produces an impressive 500kW and 1020Nm. That’s a massive jump over the 375kW/700Nm made by the outgoing V8.

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.

Mercedes makes no secret that the battery is designed for performance, not saving fuel. It only has a 14km EV range but can recharge quickly on the move to provide a power boost when needed.

But despite all that, the GLC63 is actually significantly more fuel efficient than the old V8, using a claimed 7.3L/100km, which is a massive 4.9L/100km improvement over the old model. Although, on our day-long test drive we didn’t manage to come close to that claimed figure and instead saw returns around 11L/100km, albeit after a lot of spirited open-road driving.

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.

Anyone who still believes in the adage ‘there’s no replacement for displacement’ hasn’t driven a modern turbocharged and hybridised engine. The GLC63 is a demonstration of the metaphorical and literal power of modern technology, combining an extremely efficient and potent internal combustion engine with an electric motor to make enormous real-world performance.

To be blunt, the GLC63 feels like a rocketship out of corners, launching with a ferocity and relentlessness the old V8 simply can’t match. It shouldn’t come as a surprise, a mid-size SUV with 1020Nm was always going to have plenty of performance, but even so it’s a shock to the system every time you give the GLC63 full throttle. Officially AMG claims it takes just 3.5 seconds to run 0-100km/h and has an electronically limited top speed of 275km/h - mighty impressive figures for a five-seat mid-size SUV.

To help get all that torque to the road, AMG deploys torque distribution technology that allows for it to be split an even 50/50 front/rear all the way to 100 per cent to the rear tyres.

Other technologies deployed to enhance its handling include AMG Ride Control suspension with adaptive damping and rear-axle steering. There’s also eight AMG Dynamic Select driving modes and four AMG Dynamics settings (Basic, Advanced, Pro and Master), so it’s a complex vehicle that is designed for the enthusiast.

While it’s easy to drive around town, once you get out on the open road you can really get a sense of the GLC63’s performance potential. Beyond just its powertrain the suspension offers good body control and the rear-axle steering helps it feel agile and responsive. 

It’s not perfect though. At times the complexity of the system does lead to some hesitation when you put your foot down. It certainly lacks the linear power delivery of the old V8 and makes for a slightly trickier driving experience at times.

As for the sound, which is one of the biggest elements missing from the V8, Mercedes has added AMG Real Performance Sound, which features a pressure sensor in the exhaust that picks up on the engine note and plays it through the speaker system. It certainly helps make for a louder, more noticeable engine noise, but it still sounds more like an A45 than the previous GLC63 and for many would-be buyers, that’s a major turn-off.

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.

Audi claims this is the safest Q3 ever, with more safety equipment than before to ensure it meets modern customer demands.

There’s a 360-degree camera setup, reversing camera, adaptive cruise control and a host of other active safety features. But perhaps more importantly than just having these systems, they are locally tested and calibrated for local conditions.

This has quickly become an area where the premium brands are separating themselves from the mainstream. In the case of the Q3 we found that the lane keeping assist and adaptive cruise control worked better than your average mainstream model, so the local testing appears to have paid off.

Another safety feature worth mentioning is the new parking assistance system, which now includes ‘reversing assist’. This new technology can remember the last 50m of your trip and reverse backwards without your help. There’s also ‘trained assist’, which can learn up to five specific parking situations, that you can program and save. So, if you have a particular driveway or parking spot you can teach the car once and it can park itself in future.

The Q3 comes equipped with enough safety to score a maximum five-star rating from Euro NCAP and ANCAP. However, in a confusing twist, this is based on testing done to the 2025 protocols, even though the Q3 has only gone on sale in 2026. So future five-star ANCAP models will have been tested to a theoretically higher standard, which is something to consider when comparing models from other brands.

The GLC63 is covered by Mercedes Australia’s usual five-year/unlimited kilometres warranty.

As for maintenance, Mercedes offers service plans, spanning three to five years. Three years will cost you $5025, $6455 for four years and five years is priced from $7180. Servicing intervals are 12 months or 20,000km, whichever comes first.

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.