MG Im5 vs Mercedes-Benz GLC-Class

What's the difference?

The MG IM5 Performance is fast, comfortable, quiet and super refined. Putting some minor spec and active safety niggles to one side, it offers the features, tech and price to match it with its well-credentialled and already popular mid-size EV sedan competitors. Is there room for one more? We think there should be.

The new Mercedes-Benz GLC200 might be the base-grade, but it doesn’t look or feel like it. From the outside, it’s stylish and refined, and inside, it delivers that signature Benz luxury with premium features, impressive tech and a beautiful cabin.

While the engine isn’t wildly powerful, it’s more than capable for everyday driving and long stretches on the highway and the ride quality overall is smooth, quiet and composed. It loses points for being more expensive than its entry-grade rivals and for those steep ongoing servicing costs, which could be a sticking point for some buyers.

Playing spot the straight line on the outside of the MG IM5 is like an automotive design version of Where’s Wally? There aren’t many, in the midst of an unrelentingly curvaceous exterior treatment.

At close to five metres long and two metres wide the IM5 is appreciably longer (+211mm), a little wider (+27mm) and a bit taller (+33mm) than a Tesla Model 3. Think BMW 5 Series in terms of overall size.

And the soft-form shape is functional; the swoopy liftback boasting an ultra-slick 0.24 drag coefficient.

That said, I’m not convinced by the ‘Periscopic’ cameras informing the driver assistance systems from the front guards. They scream tacked-on afterthought. But a touch-only initial opening function for the flush door handles is cool and makes life easier.

The curves continue inside with soft-padded surfaces around the dash and doors, but the straight edge obviously came out for the 10.5-inch central media screen and vast 26.3-inch upper display. There are next to no buttons; even exterior mirror adjustment is directed from the screen to a multi-function steering wheel control.

System software (powered by a Qualcomm ‘Snapdragon’ chip) is lightning fast with a two-finger up and down swipe shortcut function on the central screen for ventilation and other functions.

The interior is light and bright thanks to the enormous panoramic sunroof. It’s been fine in cooler winter conditions during this test but it could be interesting to revisit in the heat of an Aussie summer

There are two interior colour schemes available - the ‘Highland Grey’ of our test car or ‘Dover Beige’ for those brave enough to live life with the threat of scuff marks on your shiny new car’s glamorous but vulnerably light interior.

The GLC is a handsome SUV with a strong, confident stance. It looks fit and premium, but not overly sporty, especially with the standard 'Avantgarde' exterior styling seen on our test car.

The entry-level grade rolls on 19-inch alloy wheels, features slimline running boards, LED lighting all around and an interior ambient lighting package that even includes logo 'puddle light' projection from the side mirrors.

Inside, the GLC200 doesn’t skimp on style. You get sports seats trimmed in synthetic leather (available in a range of colours), plus a panoramic sunroof, flashy dual displays and a black headliner that adds a cocooned feel.

The ambient lighting is a real standout and reminiscent of sci-fi films like Tron! It adds to the cabin’s upmarket vibe.

Combined with the soft-touch surfaces and neat trim details, the interior feels luxurious. And to be frank, it should at this level. But not every base-grade SUV in this segment gets it right. This one does.

There’s plenty of breathing room up front and in terms of storage one of the first things worth calling out are the long but relatively narrow door bins. No good for anything above unusually slender bottles, even if they’re lying down.

No conventional glove box in the dash, but there is a large lidded box (cooled and heated) between the seats that doubles as a centre armrest. It’s supplemented by a big stowage area underneath the flying buttress style centre console.  

There are two cupholders in the centre console as well as a wireless device charging pad in front of them with a vaguely phone-shaped oddments bin alongside it.  

Move to the rear and the IM5’s 75mm wheelbase advantage over the Tesla Model 3 is clear. Heaps of knee and headroom for me at 183cm sitting behind the driver’s seat set to my position. 

But… the seat sits low which pushes your knees up into the air to the point where my thighs are not contacting the seat cushion. Even though the rear seat reclines to a certain degree it’s a problem compounded by a chronic lack of room for your toes under the front seat. Awkward.

There are map pockets in the front seatbacks, modest bins in the doors and a fold-down centre armrest with two cupholders. Adjustable ventilation in the rear of the front centre console always makes life in the rear seat more pleasant.

The car also houses ‘Strong Magnets’ at various points around the cabin and boot, with a configurable adapter able to lock a phone or tablet into place for the entertainment of, in our case, back seaters. 

Speaking of devices for entertainment, there are two USB-C sockets and a 12-volt outlet in the front and another USB-C and 12V in the back, so charging isn’t an issue. 

The IM5 is a liftback so the boot aperture is generous and a capacity of 457 litres with the rear seats up is decent for a car of this size, although that’s less than the Tesla Model 3 (594L) which has an additional well under the floor. 

Still, enough room for the largest (124L) and smallest (36L) suitcases from the CarsGuide three-piece luggage set with some room to spare.

The power tailgate can be operated hands-free via the key or an always welcome under bumper kick function.

Volume expands to 1290 litres with the rear seats folded and there’s a modest 18-litre ‘frunk’ under the bonnet.

The bad news is a repair-inflator kit rather than a physical spare wheel, but the better news is the IM5 Performance can tow a 1500kg braked trailer (750kg unbraked).

The IM range also features the ‘MG iSmart’ app allowing remote control of various functions including charging, checking vehicle location and route planning. 

The cabin is spacious in both rows, with decent access thanks to wide door apertures and 195mm of ground clearance. That said, it’s the kind of cockpit you sort of tuck into and I knocked a knee or elbow on the steering wheel getting in (my husband joked this was just a user issue). My eight-year old had no trouble hopping in and out, though.

The front seats are best described as sumptuous, with features like expandable under-thigh and lumbar support. It’s super easy to get comfortable and stay that way, a big plus for anyone who does long drives, like I do.

The rear seats are equally comfy, with generous padding and deep bases. You’ll find three top-tether points in the back row, but realistically, it’s a space better suited to two child seats.

Keeping the cabin tidy is simple thanks to thoughtful storage throughout. There are deep door bins with drink bottle holders, a couple of cupholders in each row, a largish glove box and a dual-lid centre console.

Up front, there’s also a phone cubby, two USB-C ports and a wireless charging pad. In the rear, you get another two USB-C ports and some handy map pockets.

The boot has proven to be a practical space, with 620L of capacity and a level load floor. There’s a reversible mat and underfloor storage, which is also where you’ll find the space-saver spare tyre.

This grade now includes a powered tailgate, a welcome addition, and the second row folds electrically in a 40/20/40 split, giving you more flexibility when you need it.

The updated media display is easy enough to use once you spend a bit of time with it. The touchscreen is responsive, and wireless Apple CarPlay maintained a steady connection throughout our test. I also appreciated how the instrument cluster and head-up display pull through directions from either your phone or the in-built sat nav system.

There are five variants in the GLC range, and for this review we’re testing the new entry-level GLC200, priced from $84,455, before on-road costs.

While it’s definitely more affordable than the next step up, the GLC300, it still wears the highest price tag among its base-grade rivals, with the Audi Q5 35 TDI starting from $73,400 and the BMW X3 xDrive20i from $77,601.

That said, the GLC200’s generous equipment list could easily convince you it sits higher in the range. Standard features include 19-inch alloy wheels, synthetic leather trim as well as electric front seats with memory, heating and Mercedes’ ‘kinetic’ function.

You also get a panoramic sunroof, a slick 12.3-inch digital instrument cluster, a colour head-up display and a vertical 11.9-inch media screen running an upgraded operating system with satellite navigation plus wireless Apple CarPlay and Android Auto.

Practicality hasn't been overlooked, either. There’s a space-saver spare tyre (a welcome change from the run-flat tyre solution often employed by Euro brands), a handsfree powered tailgate, adaptive LED headlights, dual-zone climate control, four USB-C ports, two 12-volt sockets and a wireless charging pad.

Our test car also includes the optional 'Plus Package', which adds $5846 to the price. It bundles in a 15-speaker Burmester sound system, digital matrix LED headlights, heated and noise-insulating glass, augmented reality navigation and a digital key via the Mercedes-Benz app.

You’ll also find a few extra safety additions here, such as a lane centering aid, emergency steering assist, interior monitoring and external surveillance for added occupant protection and theft deterrence.

Overall, a bit more expensive but you get an impressive amount of features.

The MG IM5 Performance is powered by an electric motor on each axle - the rear (372kW/500Nm) more powerful than the front (200kW/300Nm), for overall outputs of 572kW (that’s close to 770hp) and 802Nm of pulling power.

The official term for that amount of grunt is… a lot. And we’ll get to what it means on the road in the Driving section shortly.

The GLC200 is powered by a 2.0-litre, four-cylinder, turbo-petrol engine paired with a 48-volt mild-hybrid system, producing up to 150kW of power and 320Nm of torque. It’s the least powerful engine in the GLC range, but still manages to feel punchy when you need it to.

This all-wheel-drive variant is paired with a nine-speed automatic transmission. While it can feel a little twitchy at lower speeds when the auto start/stop system is active, it’s otherwise a smooth and well-matched combination for everyday driving.

The MG IM5 Performance features an 800-volt electrical architecture which means the 100kWh NCM battery can accept a DC peak charge of close to 400kW.

Only snag is the highest you’ll currently find in Australia is 350kW. But even at that rate you’ll still be looking at a 30-80 per cent charge in just over 15 minutes. Maximum AC charge rate is 11kW.

Claimed range is 575km (WLTP) which is less than the Tesla Model 3 Dual Motor AWD at 629km.

Over a week of city, suburban and some freeway running we saw average energy use of 20.6kWh/100km which is on the high side for an EV of this size but maybe not for one with this kind of performance potential. 

The GLC200 has an official combined cycle (urban/extra-urban) fuel consumption figure of 7.5L/100km and with its 62-litre fuel tank, you’re looking at a theoretical driving range of up to 826km which are solid figures for a family cruiser.

In real-world testing, I averaged 7.8L/100km, mostly around town with one longer trip thrown in. Overall, I’m pretty happy with its efficiency.

Mercedes-Benz recommends a minimum of 95 RON premium unleaded petrol for this model.

First things first, the IM5 Performance is supercar fast. This 2.3-tonne five-seater blazes from 0-100km/h 3.2 seconds and with its dual motors combining to produce 572kW/802Nm, eye-widening performance always resides underneath your right foot.

But it’s not all about straight line speed. Ride comfort is excellent. Underpinned by an all-new platform, the IM5’s suspension is by double wishbones at the front and multi-links at the rear. But the key to its bump and rut smoothing ability is air suspension and ‘continuous control’ active damping.

Fold in double-glazing on the full-length glass roof and side windows, as well as active noise cancellation and you have a serene interior environment at any speed. Also worth noting the front seats are great; as grippy as they are comfortable.

Not only that, despite its relative heft, this mid-sizer steers well, too. Not the last word in road feel but it points accurately and the standard rear steering helps with prompt (but never jerky) cornering turn-in. Flick to ‘Sport’ mode and the IM5 is up for some enthusiastic running.

The rear wheels can turn up to 12 degrees in the opposite direction to the fronts at slow speed, which makes for a usefully tight 10-metre turning circle. But above that, at lesser angles, it adds extra stability and decisiveness in the way the car steers through even tight, twisty sections.

Rubber is top-shelf Pirelli P Zeros on 20-inch alloys (245/40 fr - 275/35 rr) and it grips hard, especially in the wet weather over much of the test period. Braking is solid, as it needs to be, with ventilated discs all around and four-piston callipers at the front. 

No adjustable regen braking but you can feel the ‘Cooperative Regenerative Brake System’ (CRBS) doing its thing when you lift off the accelerator. 

The physical rear view is modest thanks to the slope of the back window reducing its functional area for the driver to that of a 1950s VW Beetle. Even the interior rear-view mirror is tiny and folds up into a recess in the headliner if you’d prefer life without it.

But that’s where a rear camera view popping up on the upper screen display (accessed via the right-hand steering wheel click control) comes in handy. Side camera views are also available as is a 360-degree overhead view, which makes parking straightforward.

If you need more parking help there are various self-parking modes including a nifty ‘Curbside’ function that will realign the car hands-free if you’re parallel parked too far out from the kerb.

In a similar vein, a ‘Rainy Night’ mode projects left and right rear views onto the main screen using AI to enhance clarity and highlight pedestrians and cars.

Overall the ADAS (Advanced Driver Assistance Systems) are relatively unobtrusive but we found ourselves switching off the incessant overspeed chime that sounds for 10 seconds if you creep over the indicated speed limit, even when the system has misfired on the correct speed. For example, 40km/h school zones on a Sunday.

The over-zealous driver distraction warning also occasionally issued a visual and audible slap on the wrist when I was looking straight ahead. Tellingly, there’s a specific quick screen for turning both these functions off, but it kinda defeats the purpose of having them in the first place.

We also found the adaptive cruise control to be hesitant in multi-lane environments, reducing speed occasionally because the system seemingly believed a car was set to merge, when it wasn’t.

Despite having the ‘baby’ engine in the range, the GLC200 doesn’t feel underpowered. Power delivery is generally quick, and there’s enough in reserve when you need to get up to speed or overtake. It’s responsive and confident in everyday driving.

That said, the auto start/stop feature is frustrating around town, especially at give way signs or roundabouts where you’re more likely to pause than come to a full stop.

It will cut the engine, and then when you want to accelerate, there’s a delay - sometimes even a little rollback. Not ideal, and definitely something that takes away from the otherwise polished drive.

The suspension hits a lovely balance, it’s forgiving but not floaty. You feel the road just enough to stay connected without it ever feeling harsh, which means the ride stays smooth and composed. It’s also a lovely highway cruiser, easily settling into long stretches with comfort and ease.

Visibility is solid, with minimal blind spots thanks to slim pillars, and the steering is responsive. It corners with confidence, too, with very little body roll, which isn’t always the case in a mid-size SUV.

Parking is straightforward thanks to a clear 360-degree camera system and park assist. The reversing camera turns with the steering wheel, which takes a moment to adjust to, but ultimately makes tight manoeuvres that little bit easier.

The GLC carries a maximum five-star ANCAP safety rating, based on testing conducted in 2022. It scored an excellent 92 per cent in both adult and child occupant protection, which gives plenty of peace of mind for families.

It’s also well-equipped when it comes to safety tech. There are 10 airbags in total, including a front centre airbag and side chest airbags for both rows; a solid showing in this segment.

Even without the optional Plus Package, the GLC comes loaded with safety features including blind-spot monitoring, side exit assist, lane departure alert, lane keeping aid and traffic sign recognition.

There's also driver attention warning, a 360-degree camera view, front and rear parking sensors, forward collision warning, intelligent seatbelt reminders and rear cross-traffic alert.

With the Plus Package, you add interior and exterior monitoring systems, along with something called 'Pre-Safe Impulse Side'; a clever feature that gently moves front occupants away from the doors if a side impact is imminent.

Autonomous emergency braking is also included, with pedestrian, cyclist, car and backover detection. It operates from 7.0-80km/h (or up to 250km/h for vehicles), which is slightly higher than most systems that usually activate from 5.0km/h.

In the back, there are ISOFIX child seat mounts on the outboard seats and three top-tether anchor points across the row.

The MG IM5 Performance is covered by a seven-year/unlimited km warranty, which is a plus, but the catch is it’s conditional on authorised dealer servicing. Go elsewhere and the term drops to a more common five years/unlimited km. The drive battery is covered for eight years/160,000km, which is the norm in the Aussie market

Servicing is required every 12 months or 20,000km with charges averaging $586 per workshop visit for the first five years, which is on the high side for an EV, even at this price point, the average bumped up by a more than $1400 doozy at year four.

MG IM models are sold (with service available) through all of MG’s 100-plus dealerships across the country, so no concerns there.

The GLC is backed by a five-year/unlimited kilometre warranty, which puts it on par with key rivals in this space. Servicing intervals are generous, too, at every 12 months or 25,000km. Great news if you rack up a lot of kilometres.

But the catch? Servicing costs are steep. Mercedes-Benz offers pre-paid servicing plans in three-, four-or five-year bundles, and the five-year package will set you back $7350. That averages out to almost $1500 per visit. Oof.

For comparison, the Audi Q5’s five-year plan is $3520, and BMW’s five-year 'Basic Service Inclusive' package for the X3 is $2475. So, while the GLC might win on features and finish, it definitely asks more of you when it comes to ongoing costs.