Gac Emzoom vs Mercedes-Benz SL63

What's the difference?

GAC isn’t messing around with the Emzoom Luxury. It’s undeniably eye-catching, priced well and carries just enough of a premium aesthetic to draw attention.

Is it the best small SUV I’ve driven? No. It does enough to avoid being overlooked, but it’s not quite reinventing the wheel.

What it does well is deliver a comfortable, easy urban runaround with strong equipment for the price. However, the safety calibration and overall breadth of systems feel like areas that still need attention.

All up, it gets a lot right for the money, but doesn’t quite land a knockout punch.

The new Mercedes-AMG SL63 4Matic+ is guaranteed to turn heads for decades to come. But there’s enormous design and engineering substance underpinning this car’s undoubted good looks. Stunning performance, superb dynamics and top-shelf safety make this a powerhouse GT to be reckoned with.

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

Up front, the Emzoom offers the most space and it’s where it feels most comfortable. The seats are supportive enough for longer trips, and while only the driver’s side is electrically adjustable, that’s not unusual at this price point. Wide door apertures make getting in and out easy and there’s enough elbow room so it doesn’t feel cramped.

In the rear, space is also surprisingly generous for the segment. The flat floor helps with legroom and headroom remains good despite the panoramic sunroof.

Storage is well thought through and generous. Up front, there’s a glove box, a deep centre console and a dual-phone tray that incorporates a ventilated wireless charging pad. There are two cupholders and a drink holder in each door storage bin. You also get an additional shelf underneath with both USB-A and USB-C ports, which helps keep cables and clutter out of the way.

In the rear, amenities are solid, with rear air vents, a fold-down armrest with two cupholders, map pockets and even small device pockets for added practicality. There's a drink bottle holder in each door and a single USB-A port behind the centre console.

Around the back, the boot offers a wide opening and a level load space, making it easy to use day-to-day. Capacity sits at 341 litres, which is enough for a weekly grocery run or a weekend away. There’s a spare tyre tucked under the floor and a powered tailgate is standard.

The tech is easy to live with, too. The media system is intuitive with clear graphics and a responsive touchscreen. Wireless Apple CarPlay connects quickly without fuss, and there’s also wireless Android Auto. Sound quality from the six-speaker system is crisp and the digital radio and Bluetooth hold a steady connection (where some rivals can struggle).

In the context of a high-performance GT, practicality is pretty impressive.

At just over 4.7m long the SL is a sizeable machine and much of its lengthy (2700mm) wheelbase is devoted to making the driver and front passenger comfortable.

There’s plenty of space for that pairing and just enough storage to cope with the ‘things’ they’ll typically bring with them.

Door pockets offer enough room for a few odds and ends, although you’ll struggle with even a medium-size bottle unless you’re willing to lay it down horizontally along the top of the aperture.

A handy lidded bin between the front seats doubles as a centre armrest, there are two cupholders under a sliding lid in the centre console and the glove box is a decent size. 

Power and connectivity options run to four USB-C ports, a 12-volt socket and the wireless device charging pad.

Then there are the rear ‘+2’ seats, and Mercedes makes no bones about the fact they’re intended for occasional use only, even suggesting a 1.5m occupant height limit.

And there’s no doubt they offer a handy emergency seat or a fun kids’ zone. Just ask a Porsche 911 Carrera owner how much this kind of seating arrangement increases a sports car’s flexibility.

At 183cm I gave the back seat a crack, which meant sliding the front (passenger) seat way forward with the backrest close to upright. But I squeezed in, and there was just enough legroom for a person in front at the same time. 

With the roof in place there’s the added pleasure of cranking your head over to around 45 degrees. But it’s do-able! 

No storage, adjustable ventilation, or power back there. But that’s fair enough, especially given there are USBs available in the front centre storage box.

Boot volume is 240 litres with the roof up and 213 litres with it folded, which is enough for some light luggage, and not too shabby when you think a Toyota Corolla hatch offers up just 217 litres (with all seats up).

There’s a 12V socket in there, but don’t bother looking for a spare, in the event of a flat your only option is a repair/inflator kit.

Priced at $373,370, before on-road costs, the new SL63 4Matic+ will be battling top-shelf performance soft tops including (in ascending dollar order) BMW’s M850i xDrive Convertible ($307,100), the Porsche 911 Carrera GTS Cabriolet ($386,900) and even exotics like the Lamborghini Huracan RWD Evo Spyder ($422,606). 

Value for money is a relative concept in this part of the market, although equipment highlights include a head-up display (with augmented reality nav), 11-speaker, 650-watt Burmester surround sound audio, ambient lighting (choice of 64 colours), hectares of Nappa leather trim, dual-zone climate control, an 11.9-inch central multimedia screen (running Merc’s latest ‘MBUX’ software), 12.3-inch configurable digital instrument display and 21-inch forged alloy rims.

There’s also the ‘Digital Light System’ built around three high-power LEDs in each headlight, refracted and directed through 1.3 million ‘micro-mirrors’ to create a combined resolution of 2.6 million pixels.

The ‘Neck Scarf’ function is added to the top of the front seats to keep your neck and the back of your head warm as the temperature drops, the heated, ventilated and massaging front seats feature eight-way electric adjustment and three memories, there’s a heated steering wheel, Android Auto and Apple CarPlay connectivity, wireless device charging and more.

Worth noting the big 21-inch rims in a ‘10-twin-spoke’ design are standard issue with an alternate ‘multi-spoke’ pattern available as a no-cost option. 

But if all that’s not enough you can opt for ‘AMG Performance seats’ ($2490) which grip you even more securely but delete the massage function.

Or there’s the ‘AMG Night Package’ ($6990) which adds wheels in matt black (with “high-sheen finish rim flange”), darkened head- and tail-lights, an aero package, black badging, black radiator fins and interior trim elements in black chrome.

Then you can go the whole hog with the ‘AMG Carbon Fibre Package’ ($11,990) which brings the wheels in matt black, exterior carbon elements, carbon mirrors, carbon interior trim and a steering wheel in a combination carbon-fibre and Dinamica (synthetic microsuede).

The Emzoom Luxury is front-wheel drive and powered by a 1.5-litre turbo-petrol engine producing 125kW and 270Nm.

That gives it a slight edge over the GWM Haval Jolion, which sits at 105kW and 210Nm and puts it more in line with the MG ZS Vibe Turbo and Kia Seltos Sport+. On paper at least, it’s competitive for the segment and suggests there’s enough performance on tap for daily driving.

It’s paired with a seven-speed dual-clutch auto transmission. Around town, it can feel a little clunky at lower speeds, particularly in stop-start traffic, but it settles down as you pick up pace and feels much smoother on the open road.

This new ‘4Matic’ all-wheel-drive SL63 features AMG’s (M177) 4.0-litre twin-turbo V8, superseding the previous rear-wheel-drive SL’s similarly configured 5.5-litre unit.

Hand built by one AMG technician from start to finish, it produces 430kW (around 580hp) from 5500-6500rpm and 800Nm across a broad plateau from 2500-5000rpm.

It’s something of a mechanical masterpiece, and the previous seven-speed auto transmission, driving the rear wheels only, has been replaced by a nine-speed dual-clutch auto (with wet multi-disc start-off clutch) sending drive to all four wheels via Merc’s ‘4Matic’ AWD system.

The Emzoom Luxury has a 47-litre fuel tank and a claimed combined cycle (urban/extra-urban) consumption figure of 6.6L/100km, which gives it a theoretical driving range of up to 712km. That’s more than enough to comfortably get through a week of mixed driving.

In the real world, my trip computer returned 6.2L/100km after a mix of mostly urban driving and a longer highway run. That’s a strong result and reinforces its credentials as an easy urban runabout.

Mercedes-AMG’s official fuel economy number for the SL63 on the combined (WLTP) cycle is 13.9L/100km, the 4.0-litre twin-turbo V8 emitting 319g/km of CO2 in the process.

On the roughly 300km launch program we covered urban, B-road and some freeway running, returning an (indicated) average of 17.5L/100km. And that reflects some enthusiastic driving along the way.

The fuel tank requires 70 litres of 98 RON premium unleaded to fill it which translates to a theoretical range of around 500km, dropping to 400km using our real-world number.

On the road, the Emzoom has enough power to feel spritely and capable, whether you’re darting around town or merging onto the highway. That said, the way it delivers that power at lower speeds can feel a little inconsistent. There were moments where lifting off the accelerator didn’t translate to an immediate response, with the car continuing to surge forward briefly. Which made for a few 'eek…' moments during the week.

Handling is on the sharper side for the segment. The steering and suspension are well judged, giving it a slightly zippy, eager feel through corners without tipping into harshness. Braking, however, can feel a touch spongy underfoot, which takes away from that otherwise confident set-up.

Visibility is a mixed bag. Thick pillars, a relatively low window line and a small rear view can make it feel hemmed in from the driver’s seat. Though, the blind-spot camera feed popping up on the display takes some of the guesswork out of lane changes.

Ride comfort is solid overall. It handles bumps well enough, and a longer drive proved comfortable, although there is a low level of road noise that creeps in at higher speeds.

Where the Emzoom really shines is around town. It’s easy to manoeuvre, with an 11.2-metre turning circle that makes tight streets and car parks feel manageable. The 360-degree camera system is clear and makes parking a relatively stress-free experience.

I recall driving the AMG SL65 around the backroads of Tassie a few years ago and that twin-turbo V12 monster famously packed 1000Nm of torque, while this car ‘only’ has 800.

But there comes a point where enough is enough… and this is enough!

With maximum torque available from 2500-5000rpm and peak power (430kW) on call from 5500-6500rpm there’s always stupendous acceleration available with a squeeze of your right foot.

Claimed 0-100km/h time is supercar fast at 3.6 seconds, while top speed is a toupe-troubling 315 km/h. And that’s electronically limited!

A typically ferocious engine noise and howling exhaust note accompany rapid progress and shifts from the nine-speed dual-clutch transmission are quick and positive, not to mention especially enjoyable using the steering wheel-mounted paddles.

There are six ‘AMG Dynamic Select’ drive programs from Comfort through to Race, the latter including a Drift Mode, which we didn’t experiment with. Nor did we dip into the ‘AMG Track Pace’ system for circuit-focused mapping and timing

However, far from drifting, the grippy Michelin Pilot Sport 4S rubber (275/35 fr - 305/30 rr) plants the car securely with the all-wheel-drive system and electronic locking rear diff playing their part.

I found the perfect set-up was in the ‘Individual’ mode with the engine, transmission and steering in racier settings and the suspension in ‘Comfort’. The adaptive damping in this configuration mixes smooth ride compliance with sharp dynamic response.

The car’s aluminium space frame chassis is part of a body structure mixing aluminium, magnesium, fibre composites and various strength steels.

Torsional rigidity is claimed to have been improved by 18 per cent and despite the lack of a roof the SL feels tight and solid.

Suspension is by alloy double wishbones front and rear with adaptive damping and active hydraulic anti-roll stabilisation standard (so, no physical anti-roll bars).

At the same time the 4Matic AWD system is able to vary torque distribution up to 100 per cent to the front or rear axle depending on where drive can be put to best use.

The speed sensitive, variable ratio, electronically controlled steering is accurate and turns in beautifully with good road feel. No doubt assisted by electric rear steering able to adjust the angle of the rear tyres by up to 2.5 degrees.

All this adds up to a hugely impressive package that, despite its 1970kg kerb weight, feels agile, athletic and able to attack corners like an overgrown hot hatch, putting its power down with unwavering authority.   

While indecently fast the SL63 can also stop rapidly with the AMG high-performance braking system standard. 

Huge composite ventilated and cross-drilled discs (390mm fr - 360mm rr) are clamped by six-piston fixed alloy calipers at the front and single-piston units at the rear. They wash off speed calmly and consistently with perfect pedal feel.

Even at highway speeds, particularly with the windows up, normal conversation is easy with the roof down. But if you need to raise (or lower) it, the operation takes 15 seconds and is possible up to 60km/h. 

Under the heading of miscellaneous observations, the turning circle is a not insubstantial 12.8m, so beware in the car park.

A front axle lift function is a welcome standard feature, raising the car’s nose 30mm with the press of a button. And lift locations are stored in GPS data, so the car will subsequently remember to lift itself at the same place, even if you don’t! 

Heating and cooling for the front seats combined with the heated steering wheel and Air Scarf neck warming makes winter top-down driving a pleasure.

The digital instrument display is not only crystal clear, it can be changed through multiple configurations, including a tunnel-like graphic for engine revs as well as specific readouts for speed, g-force, the lot.

At the same time, the central media screen’s angle can be adjusted to better cope with reflections and the windscreen wiper system Merc calls ‘Magic Vision Control’ channels fluid along the wiper arms onto the rubbers, which isn’t new, but works spectacularly well here.  

No independent ANCAP safety assessment at this stage but the SL63 is fitted with the ‘Driving Assistance Package Plus’ which includes a heap of active (crash-avoidance) tech including AEB (with pedestrian detection), active cruise control, lane keeping assist, lane change assist, traffic sign assist, ‘Active Traffic-assist’ and ‘Active Steering Assist’. 

There’s also tyre pressure monitoring and the ‘Active Parking Assist with Parktronic’ self-parking system supported by a 360-degree camera view and multiple sensors. 

If a crash is unavoidable the airbag count runs to eight, including side bags for rear occupants. There are ISOFIX anchor points for child seats or baby capsules in the two rear and front passenger seat positions. And an active bonnet is designed to reduce injuries in the case of a pedestrian impact.

The Emzoom is offered with a seven-year/unlimited km warranty which is great for the class.

Service pricing has yet to be finalised for the Emzoom and for now the service network is tiny, with only around 10 centres nationwide but you can undergo authorised repairs through places like MyCar.

The SL63 4Matic+ will be covered by Mercedes-AMG’s five-year/unlimited km warranty, with roadside and accident assistance included for the duration, both of which are expected in this category. 

Maintenance intervals are 12 months/20,000km, and a fixed-price service plan lists an average of $1583 for each of the first three visits to the workshop. Not exactly small change, but not unheard of in this part of the market.