Mercedes-Benz Eqa350 vs Infiniti Q50

What's the difference?

On one hand, the EQA 350 4Matic has the styling, interior presentation, forceful performance and handling prowess to make you forgive its very expensive price tag, especially when so many rival EVs are also so talented.

But there’s too much that’s ordinary about this Mercedes to justify its huge ask, including a lack of that final polish in the way it drives and rides.

Despite being a recent release, the EQA is already feeling beyond its age. For the money, the 350 4Matic feels out of its depth.

The Q50 Red Sport is a premium sedan that's great value, with a cracker of an engine. While Infiniti has improved the ride and steering, it still feels to me that the engine is too powerful for the wheels and chassis to handle. But if you're looking for something of an untamed beast, this car could be for you. Just don't say we didn't warn you.

A high-riding hatchback (its handy 209mm ground clearance is only 4.0mm shy of the GLA equivalent), the smooth and handsome EQA is like an EQC that’s been left in a tumble dryer for too long, shrinking into its smaller proportions.

Along with the EQA's obvious electric powertrain inclusion, differences compared to the GLA include a blanked-out grille, a redesigned bumper, fresh wheel styles and a full-width LED tail-light treatment. 

All add some character to the rather amorphous donor car.

The Q50 Red Sport looks cranky from front on, which I like in a car. Yes, the grille is simplistic and gaping, the nose is a bit bulbous, and sure, side on the car looks like a Lexus IS 350, but those rear haunches and the aggro body kit with its front splitter and boot lid spoiler make for an impressive looking four-door sedan.

The update brought restyled front and rear bumpers, those red brake calipers and the dark chrome 20-inch rims and new LED tail-lights.

Inside, the cabin is an asymmetrical paradise (or hell, if you're a bit OCD like me) full of sweeping lines, angles, as well as different textures and materials.

The red stitched quilted leather seats are an addition that came with the update, so is the new steering wheel and the ambient lighting.

The 'Sunstone Red' colour of our test car is also a new hue which looks a bit like Mazda's Soul Red. If red is not you, there are other colours – hope you like blue or white or black or grey because there's 'Iridium Blue', 'Midnight Black', 'Liquid Platinum', 'Graphite Shadow', 'Black Obsidian', 'Majestic White' and 'Pure White'.

The Q50 has similar dimensions to the IS 350: both are 1430mm tall, the Infiniti is 10mm wider at 1820mm,  120mm longer at 4800mm, and has a wheelbase that's 50mm longer at 2850mm.

Like the second-gen (H247) GLA, the EQA sits up high, offering lofty seating. That’s core to this range’s appeal, making getting in and out a less acrobatic feat compared to smaller and lower EVs.

The cabin is very similar to many of the second-generation MFA2 transverse-engine/front-drive-based Benzes like the current A-Class. That means solid looking and feeling doors and dash, upping the sense of quality. Very on-brand stuff.

This is a very modern and inviting interior, with those aforementioned screens set within a large rectangular binnacle. To the centre there are the trio of turbine-style air vents that still bring a spark of joy to the cabin (as well as seriously effective ventilation), along with the row of metallic toggle switches; both provide pleasing, high-quality sensory experiences.

It can lean towards overkill with a trashy night-club ambience if restraint is not exercised with the (configurable) coloured light show dotting the EQA's cabin. 

Not to everybody’s liking, but thankfully you can turn that stuff off, so no complaining necessary here.

You wouldn’t call the EQA particularly spacious with its curvy roof, snug sports seating, high waistline, narrow glass areas and thick pillars, but even 200cm-tall people should find enough legroom up front. There’s a sense of cosiness rather than crampedness.

The 350 4Matic’s sports seats do a great job holding and caressing you in, providing excellent bracing through tight corners. Three’s ample (powered) adjustment, including for lumbar and lower-back areas, as well as enough support for thighs. The cushions themselves are typically firm yet comfy. And the seats look great. 

The driving position is superb, ahead of a set of vibrant digital instrumentation choices that run the gamut of tastes, with the 'Classic' dial-like look and minimalist settings (reminiscent of Saab in its essentials-only display) included, so as to not scare away traditionalists. There is also a 'Progressive' screen that’s colourful and techy, though the info presented is a lot to take in.

What may not please conservative Benz buyers are the cheap-looking plastics dotted throughout the interior, along with the rattles that are regular companions, especially over less-than-smooth roads. 

This has been a bugbear of all MFA-platform vehicles for more than a decade now, and while better than in some previous models, the EQA at $100K should possess vault-like build quality, not squeaky trim.

And when will that small and flimsy gear selector stalk be binned?

Our test car’s ‘Hey, Mercedes’ voice control system was erratic at best, barely providing any assistance and regularly annoying/entertaining with misunderstood responses and laughably limited functionality. Was our example glitchy? Perhaps.

Storage is good. And, ergonomically, everything’s within reach of the driver, but there’s a lot to take in, with scattered switchgear.

It’s also worth noting that, if you’re new to the MBUX multimedia system, taking the time to learn its many functions and capabilities is advisable, as it’s more logical and simpler than the intimidating first impression suggests. 

A deft thumb is required for the steering-wheel spoke-actuated tabs for instrument data, but even technophobes ought to master it all eventually. 

The central part of the screen can be swiped to access the vast array of features, including the excellent audio system and detailed vehicle control settings.

Further back, passengers sit up high, giving a wide view of what’s happening up front, while the backrest is angled at just the right position. 

There’s not much fun to be had sitting on the raised middle bit, and shoulder space is seriously limited with three abreast, but otherwise, even adults should find sufficient legroom and headroom – even with the panoramic sunroof fitted.

Deep door pockets, face-level air outlets, reading lights and a folding armrest are to be found back there, though the latter includes a flimsy slide-out cupholder set that’s not worthy of the brand. 

Because there’s a battery pack in the rear half of the EQA, cargo capacity shrinks from the donor GLA's 435 litres to just 340L, while dropping the 40/20/40 backrests extends that into the cabin for a 1320L load space. Note there’s no spare wheel, just a tyre inflation kit.

People don’t buy these small crossover Mercedes models for space or practicality – that’s why the GLB/EQB exist – but the EQA isn’t too bad for the urban demographic which wants/needs a compact, high-riding EV with impressive ground clearance.

The Q50 Red Sport is a five-seat four-door sedan and is vastly more practical than its two-door Q60 Red Sport sister, in that I can actually sit in the back seat. The Q60's coupe styling looks amazing, but the sloping roofline means headroom is so severely limited that it reduces the rear seats to a place to throw your jacket.

True, I'm tall at 191cm, but in the Q50 Red Sport I can sit behind my driving position with legroom to spare and more than enough headroom.

Boot space is good at 500 litres, which is 20 litres more than the luggage capacity of the IS 350.

Storage throughout the cabin is good with two cup holders in the rear centre fold-down armrest, two more up front and bottle holders in all doors. A large centre console storage bin and another big storage area in front of the shifter are great for keeping junk under control and your valuables covered.

Maybe sit down for this next bit. The Q50 Red Sport lists for $79,900. Are you okay? Do you want a moment? Remember, though that only seems like a lot because it's not a Benz or a BMW. Truth is the value is pretty good – better than a German car of the equivalent size and grunt.

Look at the standard features list: 8.0-inch and 7.0-inch stacked touchscreens, the 16-speaker Bose 'Performance Series' stereo system, digital radio, road noise cancellation, sat nav, 360-degree camera, leather seats, power adjustable from sports seats, dual-zone climate control, proximity key, sunroof, auto wipers and adaptive LED headlights.

The 2017 update brought new standard features to the Red Sport including, red stitching on the seats and dash, quilted leather seats, new 19-inch alloy wheels and red brake calipers.

Don't forget that the bang-for-buck factor is strong with the Red Sport, too. In that nose is a twin-turbo V6 that makes almost as much grunt as the BMW M3 for about $100K less. Even the 340i, which Infiniti says is a Red Sport rival, is $10K more. Truth is though, the Lexus IS 350 is the real rival to the Q50 Red Sport.

The EQA 350 4Matic features an asynchronous motor and a single-speed reduction gear transmission under the bonnet, delivering 140kW of power and 385Nm of torque to the front wheels, and supported by a second, permanently excited synchronous motor located on the back axle.

'Dual E-motor' total outputs are 215kW between 7130-9506rpm up front and 5746-7661rpm for the rear motor, for a 520Nm torque total, from zero rpm. 

Drive is infinitely variable on both axles, for AWD capability. Tipping the scales at 2091kg (kerb), the 350 4Matic’s power-to-weight ratio is an impressive 103kW per tonne.

Result? Some six seconds is required to race from 0-100km/h, on the way to a 160km/h top speed.

The EQA employs a 66.5kWh lithium-ion battery pack fitted between the axles, with a maximum 11kW AC and 100kW DC charging capability.

Suspension is via MacPherson-style struts up front while a multi-link arrangement is out back. Steering is by electrically assisted rack-and-pinion.

Inside the Q50 Red Sport's nose is a 3.0-litre twin-turbo V6 petrol engine and it is a beautiful thing. To me this car is piece of technologically sophisticated jewellery that cradles a precious gem that pumps out 298kW/475Nm.

But I have my concerns... you can read about those in the driving section.

Shifting gears is a seven-speed automatic which delivers drive to the rear wheels.

Using WLTP figures, the EQA 350 4Matic’s official consumption figure is 17.9kWh/100km. Maximum range is rated at 400km.

At pick-up, our EQA was displaying a 395km maximum range availability. After 273km of a mix of city, urban and freeway driving, our car showed 47km of range left, which means we could expect up to 320km in real-world driving scenarios. 

That did include some performance testing, which tends to suck out the kilowatts, by the way.

Our trip computer showed the vehicle had consumed 20.8kWh/100km on average.

Like the EQB, the EQA offers varying levels of energy recuperation to help recharge the battery pack. In ‘D Auto’ it figures out the level of resistance automatically, but drivers can also choose to do this manually via ‘D+’ that provides coasting, ‘D’ that brings mild regeneration off-throttle, and ‘D—’ that activates maximising regen for close to single-pedal driving. These are paddle activated.

Cables for home charging with three-prong outlets are included – an eight-metre long one plus a five-metre public charging cable.

Mercedes says a 100kW DC charger will take an EQA from 10-80 per cent charged in 30 minutes, while an 11kW AC public outlet needs seven hours, and at home using a regular 3.0kW 10-amp socket requires at least 34 hours.

Mercedes also offers a Wallbox with up to 22kW charging capability for your home or office from $1710, not including installation. That drops the charging time to under eight hours, which is ideal for overnight-home or all-day work charging scenarios.

Infiniti says the V6 petrol engine in the Q50 Red Sport should use 9.3L/100km if you're using it on a mix of highways, urban streets and country roads. We only had the Q60 Red Sport for 48 hours and after a couple of days of Sydney city commutes and a trip to the Royal National Park our trip computer was reporting 11.1L/100km.

Probably the most impressive thing about the EQA 350 4Matic is how effortless, easy, and fun it is to drive, whether around town or out on the open road.

Slot the flimsy drive selector to D and this wastes no time moving off the line, streaking past 100km/h even more swiftly than the 6.0s official time suggests. 

The Mercedes powers along with strong acceleration available at all times. With such instant torque on tap, this is a treat weaving through traffic, zipping into rapidly closing gaps like a little go-cart.

At slower speeds, even in slippery conditions, the 350 4Matic feels glued to the road, possessing tons of grip wearing Pirelli P Zero 235/45R20 rubber, to help it carve through without breaking a sweat, pulled along by endless torrents of torque. Just a slight flex of your right foot has this car bounding ahead in no time.

Armed with nicely weighted and responsive steering and a planted yet agile chassis, all the makings are present for a premium electric hot hatch experience. 

However, there’s just a bit too much weight, which seems to manifest itself in somewhat top-heavy handling at higher speeds or through fairly tight corners. 

In such conditions, the Benz feels a bit nervous and a tad skittish, and not quite as composed as we’d hoped.

Disappointingly, while there’s regenerative braking using the steering paddles, it doesn’t quite bring the car to a full stop, but instead slows it down with enough force to wipe off most but not all of the speed. You can’t rely on full stop/go single-pedal braking, then.

Finally, there’s the suspension’s ability to cope with our patchy road surfaces. Over big bumps, ride comfort is fine, but smaller-frequency ones are all-too-often felt. 

There’s an underlying firmness to the chassis tune that’s in keeping with the EQA’s German heritage, but we expected more suppleness and isolation in a high-riding SUV equipped with adaptive dampers.

Plus, there’s more tyre/road noise than we’d like.

So, as a sprightly urban runabout, the EQA is ideal, with forceful acceleration and a slick powertrain. Backed up by the security of AWD, the 350 4Matic is great in inclement weather, too, with exceptional roadholding dynamics. But it isn’t quite as agile nor sophisticated and refined as we’d like a $100K Mercedes EV to be.

Perhaps the biggest complaint we had about the previous Q50 Red Sport, which launched in 2016, was that it felt as though the chassis wasn't up to the amount of grunt running through it, and those rear wheels struggled to transfer the oomph to the road without losing traction.

We experienced the same issue again in this new car. I was breaking traction, not just in 'Sport+' and 'Sport' modes, but in 'Standard' and 'Eco', too. That was happening without pushing it hard and with all electronic traction and stability aids on.

If I was 18 I'd declare to the world I'd found my dream car - something that always wants to 'light 'em up' given half a chance. But like that one mate who always gets into trouble on a night out it's only funny when you're young.

A truly great performance car is planted, balanced and able to deliver the grunt to the road effectively. The Nissan R35 GT-R is the perfect example – a brilliant piece of machinery, a weapon of a performance car and with a chassis matched perfectly to its engine.

And that could be the issue with Q50 Red Sport - that engine feels overpowered for the chassis, and wheel and tyre package.

We also felt the previous Q50 Red Sport's ride, with its constantly adapting 'Dynamic Digital Suspension', was overly busy. Infiniti says it has developed the suspension system further and it does feel as though the ride is more comfortable and composed.

Steering was another area that we weren't overly impressed with when we drove the previous car. Infiniti's 'Direct Adaptive Steering' (DAS) system is super sophisticated and was the first in the world not to have any mechanical connection between the steering wheel and the wheels – it's all electronic.

The new Q50 Red Sport uses the upgraded 'DAS 2' and while it feels better than before, it's only in Sport+ mode that it seems most natural and accurate.

The Q50 was given the maximum five-star ANCAP rating in 2014 and the amount of advanced safety equipment which comes standard on the Red Sport is impressive. There's AEB, that works forwards and when you're reversing, forward collision and blind spot warning, lane keeping assistance and moving object detection.

There are two ISOFIX points and two top tether anchor points in the back row, for child seats.

The Q60 Red Sport doesn't come with a spare tyre because the 245/40 R19 tyres are run flats, which means even after a puncture you should be able to keep driving for about 80km. Not ideal in Australia where distances are seriously vast.

Mercedes-Benz offers a five-year/unlimited kilometre warranty.

The battery pack warranty is also industry-standard, valid for the usual eight years/160,000km. Service intervals are every year or 25,000km.

There is no capped-price servicing, however buyers can purchase up-front when new to save money. 

The EQA 'Service Plan' starts at $1600 for the first three years/75,000km (whichever occurs first), $2200 for four years and $2650 for five years.

The Q50 Red Sport is covered by Infiniti's four year/unlimited kilometre warranty with servicing recommended every 12 months or 15,000km.

Infiniti has a scheduled servicing program which will cost $1283 (in total) for three years.