Audi A3 vs Mercedes-Benz GLC-Class

What's the difference?

Closing in on $60,000 for a small car isn’t cheap. Ask a car dealer and they might even say the hatchback is a good way to get someone into a showroom to eventually look at an SUV.

But I reckon you’d be doing the A3 a disservice to count it out. It’s always been one of those cars that does everything well, and with this current facelift manages to keep its practicality without becoming boring.

It looks good on the outside, it’s smart on the inside and it’s fun to drive while remaining sensible. Even if you get it in bright yellow.

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.

Eye of the beholder and all that, sure, but the A3 looks cool from the outside. It’s got this angular design but manages it without being too aggressive or busy with other design elements, so it still has a ‘premium Euro’ feel to it.

Shooting pics of the car for this review, the harsh light accentuated its sharp lines. It looks sculptural rather than just some little blob. 

At the same time, thanks to the proliferation of sports design packs like the S Line, The A3 looks like it could be an S3, almost. Which makes sense, because the front bumper and rear diffuser as well as the roof spoiler are all partly inspired by RS models.

New for the A3 is the flat, 2D Audi badge, the model name on the B pillar and the new font for its name on the tailgate. 

The lights in the cluster are able to look narrower than before thanks to their customisable settings, which allow you to choose the light signature, while the grille has a flatter appearance and the air intakes are bigger. Even the wheels look like they’re from a sports car.

Whether you’d have the A3 in the Python Yellow of our test car is another thing. I don’t mind a loud colour but I reckon a bit of 'District Green', 'Ascari Blue' or 'Progressive Red' would be the vibe.

Also, any colour that isn’t white is a cost-option on the A3, all of them coming in at $1350, except Ascari Blue which is an Audi Sport colour and costs $1850.

Speaking of the vibe, inside the A3 feels properly nice. It’s not just a spruced up Golf in there. There’s proper Audi character to the car, though that means plenty of piano black trim to get smudgy.

Audi’s done a good job making the layout look sleek without resorting to locating all the controls in the screen. There are design elements in the cabin that aren't strictly necessary but are worth doing for the way they look.

Things like the way the vents flank the driver display or the trim inlay on the passenger side of the dash.

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.

Starting from what’s right in front of you as a driver, the steering wheel is the same as in bigger, more expensive Audis. That’s a good thing, because it’s nice to hold, has a good shape for the nine-and-three hand position and it’s not too thick. 

As well as the nice, clear buttons on the wheel, you’ve got some physical controls for the climate control and some of the vehicle functions like parking assist and stop-start under the multimedia screen.

For a car this size, the 10.1-inch central touchscreen is plenty big enough, and the fact it doesn't sit up high over the dash is great. It's like a perfect arm's length for your standard-sized adult (like me). I can reach the other side of the screen without needing to lean.

The fact there’s no head-up display is a bit of a let-down, but the now-standard 12.3-inch driver display is very good. It’s configurable yet clear, and means you can get detailed navigation information in front of you rather than having to look to the multimedia screen. 

The test A3 has genuine leather upholstery, which is $1100 extra. Not the most you’d pay for leather seats in a Euro, and the seats are comfortable. They're nicely bolstered, the drivers’ side is electrically adjustable and the leather doesn’t feel hard or rough to the touch.

Sitting behind my own seating position in the second row is a little tight, however. At 178cm, my knees almost touch the seat in front. There's also no sunroof, and even though there's just about enough light, that omission doesn’t help the cramped feeling.

There are, like the front, two USB-C ports and the air vents in the back, the latter separately adjustable to avoid arguments, though the cupholders in the armrest are in an awkwardly central position.

Behind that, under the 380-litre boot's floor is a space-saver spare tyre. That's better than some SUVs designed for family adventures that only offer up an inflator/repair kit. Keep that up, Audi. Good job. Well done. 

If you fold the rear seats, you get 1200 litres of space. Interestingly, those luggage space figures are the same as the BMW 1 Series.

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 power and torque figures aren’t the only numbers that have risen sharply, with the GLC63 clearly impacted by a double whammy of inflation and the usual new-car price rise.

The GLC63 now starts at more than $191,814 for the SUV and $198,415 for the Coupe, which represents a nearly $30k increase over the old V8-powered model, which was priced at $164,600 just two years ago. Even for luxury car buyers that’s a big jump, especially when you’re trying to convince people of the merits of the four-cylinder powertrain. 

That also means it's more expensive than all of its key competitors, including the BMW X3 M Competition, Maserati’s Grecale and the outgoing, petrol-powered Porsche Macan GTS.

To help explain some of this price increase Mercedes-Benz Australia has opted for a high level of standard specification for local cars. Standard equipment includes 21-inch alloys, AMG composite braking, a panoramic sliding sunroof, a unique AMG steering wheel, power-adjustable sports seats in Nappa leather, a head-up display, dual-zone climate control, wireless smartphone charging and a Burmester 3D Sound system.

Also included is the AMG Track Pace suite, for those who want to unleash their GLC on the racetrack.

There’s also a limited run, AMG Edition 1 Package available too, for an additional $12,900. On the outside you get Manufaktur graphite grey magno paint, foiling with colour gradation and large AMG logo on the sides, an AMG Aerodynamics Package, unique alloy wheels with Edition 1 and AMG branding, yellow brake calipers and an AMG fuel filler cap in silver chrome with AMG lettering. 

Inside there’s AMG Performance seats, AMG Nappa leather in black with yellow contrasting stitching, AMG illuminated door sills,  carbon-fibre AMG trim highlights, yellow seat belts and a unique AMG Performance steering wheel wrapped in carbon-fibre and microfibre.

The A3 is powered by a 1.5-litre, turbocharged four-cylinder petrol engine that makes 110kW and 250Nm.

It drives the front wheels via a seven-speed dual-clutch auto transmission and it can hit 100km/h in a claimed 8.1 seconds.

It’s also got a 48-volt mild hybrid system to help with efficiency, though you’d need to be told about it to notice. It also helps with the A3’s (smooth) stop-start system.

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.

The A3’s 50-litre fuel tank needs to be filled with RON 95 premium fuel and it’ll drink a claimed 5.3-litres per 100km on the combined (urban/extra-urban) cycle.

Theoretically you’re topping 900km a tank there, but given how fun this car is to drive you’d have to be well behaved to get even close.

For reference, whenever I was on a normal, day-to-day drive on test the A3's trip computer was returning figures in the mid to high sixes.

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.

First things first, the A3’s exterior and S Line pack are a clue to the way the car drives. It’s probably not the perfect car if you like a cushy, soft ride. 

Its suspension errs towards the stiffer side of things, and certain bumps can feel more significant than they need to. But even on particularly bad roads or tram tracks in the city the dampers do a decent job of soaking up the harsh stuff.

It also means there’s more road noise than you’d like on some older highway surfaces, but only in a way that might get annoying if you’re on a road trip with the stereo off for some reason.

The upside of that is its steering feels well weighted and accurate. Plus, the way it handles and corners feels like a bit more grunt would make this a proper driver's car.

It’s not too intense, and there’s enough feedback to make it feel like the A3 shouldn't be a city-dweller only when it comes to driving.

Of course, it’s a hatchback, so you've got the advantages that come with less weight and a lower centre of gravity. 

It doesn’t have enough weight to push into understeer more than you’d like on a tight corner. But it also doesn’t feel so light that you’re not sure how it’s going to behave under sharp braking.

The A3’s drivetrain, despite looking underwhelming on paper, feels practical on the road. Sure, 110kW isn't anything wicked, but its 250Nm feel like they’re working in the right places - that being between 1500 and 3500rpm. 

It isn't blisteringly quick but even with the seven-speed transmission operating in default auto mode it usually feels like it's in the right place, let alone chipping in with 'manual' shifts via the paddles or shifting drive modes. The A3 has a choice of 'Normal' and 'Sport' shift settings.

You might be a little disappointed if you thought you’d be getting anything approaching a hot hatch, but for an entry-level model the A3 more than holds its own. It’s a solid platform that performs well without compromising too much when it comes to daily driving ability.

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.

The GLC63 comes standard with a comprehensive suite of safety features including 'Distronic' (Mercedes’ name for adaptive cruise control), 'Active Lane Keeping Assist', 'Blind Spot Assist', 'Traffic Light Assist' and 'Adaptive Highbeam Assist'. It also includes Mercedes’ 'Pre-Safe' accident anticipation system - which pre-tensions the seat belts and will even play a white noise to protect your ears if it senses a crash is imminent.

A parking system that includes a 360-degree camera and active parking assist is also included.

The GLC range was awarded a five-star ANCAP rating in 2022, which pre-dates the latest testing protocols, so doesn’t provide a like-to-like comparison for vehicles tested after that date.

Audi offers a five-year/unlimited kilometre warranty, which is about par for a premium brand, but it also offers five years' free roadside assist and the ability to pay to extend the warranty.

Servicing is $2520 for a five year plan, but the extended two years of 'Audi Advantage' warranty is $3250 and comes with unlimited kilometres, roadside assist and covers two services.

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.