Mercedes-Benz SL63 vs Gac Emzoom

What's the difference?

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.

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.

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.

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).

For now, the GAC Emzoom range is about as simple as it gets. There’s a single, well-specified Luxury grade on offer, priced from $25,590, before on-road costs.

That puts it right in the mix with key Chinese rivals like the GWM Haval Jolion Lux, which starts at $28,990 (MSRP) and the MG ZS Vibe Turbo at $24,990 (MSRP). It also significantly undercuts more established mainstream options such as the Kia Seltos Sport+, which opens at $37,550, before on-roads.

The Luxury arrives well equipped. You get an electric driver’s seat with ventilation, synthetic leather upholstery, a panoramic sunroof with tilt and slide function, and auto-flush door handles. There’s also a leather-wrapped steering wheel, a 360-degree camera system, parking assist and a blind-spot view monitor.

Technology leans towards the premium end, too. A 14.6-inch central display is paired with a 7.0-inch digital instrument cluster, along with ambient lighting, wireless Apple CarPlay and Android Auto and a wireless phone charger. There are two USB-A ports, a single USB-C port up front, a 12-volt socket and a six-speaker DTS sound system.

It’s the smaller details that round things out nicely. Auto LED headlights, rain-sensing wipers, dual-zone climate control, a temporary spare tyre and a powered tailgate are all included as standard.

All up, it’s a strong package for the price.

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 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.

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.

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.

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.  

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.

The GAC Emzoom hasn’t been tested by ANCAP yet and is unrated. It comes with six airbags, which is on the lower side for this class, and there are a few notable omissions.

Features like rear cross-traffic alert, side exit assist and emergency call functionality aren’t included. While there is a blind-spot view monitor that displays a live camera feed when you indicate, it doesn’t appear to have a traditional blind-spot warning system with indicator lights in the side mirrors.

The core safety suite is there. You get autonomous emergency braking, forward collision warning, lane- keeping aid and lane-departure warning, along with seatbelt reminders for all seats, a tyre pressure monitoring system and hill descent control. There are also two ISOFIX points and three top-tether anchor points for child seats.

Where it falls short is in execution. The steering assist function tied to the adaptive cruise control is overly intrusive, with noticeable inputs that make it difficult to use comfortably. Given the amount of highway driving I do each week, it’s not a system I found myself wanting to rely on.

Overall, the safety offering doesn’t feel as comprehensive or as well calibrated as it could be, which takes some shine off an otherwise well-equipped package.

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.

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.