Mercedes-Benz GLB-Class vs Audi Q5

What's the difference?

It’s easy to say the GLB35 doesn’t deserve to be called an AMG when looking at its credentials on paper, but get behind the wheel and it’s evident Affalterbach played a key role in making it feel as special to drive as it should be.

The GLB35 has all of the great qualities of the GLB250 and other GLB variants, but successfully adds a performance focus to make for an even more compelling package.

Indeed, the GLB35 proves you can pretty much have it all.

It might be a late return to the PHEV game for Audi, but it’s an impressive one. Everything great about the Q5 remains - dynamically engaging, responsive powertrain - but you get the added benefit of electric power.

This could be the car to prove that plug-in hybrid medium SUVs don’t have to be bland family transport. If the Q5 is anything to go by, going green can be downright fun!

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

With the boxy and therefore rugged-looking GLB laying some great foundations, it’s no surprise the GLB35 looks pretty damn good – to these eyes, at least.

Being an AMG model, it stands out from the crowd with an aggressive body kit, with the chunky bumpers, aerodynamic roof spoiler and racy rear diffuser all unique alongside the now-signature Panamericana grille insert.

A set of 20-inch alloy wheels with 255/40 tyres ups the ante at the side, where the carryover black plastic wheel-arch and skirt cladding serves as an obligatory reminder that this is an SUV.

Also of note are the nicely designed LED headlights and tail-lights, which literally light the way, but there’s no getting past the bespoke diffuser element, which integrates the sports exhaust system’s dual 90mm tailpipes.

Inside, the GLB35 is a technological tour de force, with a pair of 10.25-inch high-resolution displays proudly sitting side by side atop the dashboard, with one the central touchscreen and the other the digital instrument cluster.

Both are powered by Mercedes-Benz’s MBUX multimedia system, which arguably remains the best there is today thanks its speed and breadth of functionality and input methods.

The GLB35 is also properly premium. Lugano leather upholstery covers the seats and armrests, while Nappa trims the sports steering wheel. Even the door shoulders and inserts get ‘cow hide’, although theirs is of the artificial variety.

Soft-touch materials are used for the upper dashboard, leaving hard plastics to the lower sections, which is what you’d expect for the price.

While the black headliner makes for a dark cabin, brightness comes from the metallic trim used throughout, notably on the steering wheel, dashboard, doors and centre console. And let’s not forget the pop of colour provided by the addictive ambient lighting.

And mercifully, scratch- and fingerprint-hungry gloss-black accents are limited to the surrounds of the turbine-style front air vents, dual-zone climate controls and centre console.

Unique to the GLB35 are Carbon Structure trim and stainless-steel sports pedals, just in case you forgot you weren’t driving a regular GLB.

The second-generation Q5 has been around for six years, and it was very much an evolution of the original, but it still looks attractive in the metal. You couldn’t call it edgy, but it is handsome.

Both PHEV body styles get the S line exterior package as standard, which adds a unique honeycomb grille, S line bumpers front and rear, Audi Sport wheels and it borrows the rear spoiler from the SQ5.

While many will favour the swoopy Sportback body style, I think the Q5 is at its most arresting in SUV body style, bathed in the gorgeous 'District Green Metallic' paint. Stunning.

Inside, only the Sportback gains the S line interior, which includes a leather three-spoke steering wheel with multifunction, shift paddles and hands-on detection, Nappa leather upholstery with contrast stitching, and aluminium inlays. The SUV seats are leather-appointed. 

It’s fair to say Audi’s interiors have modernised since the launch of this Q5 in 2017, but it’s still hard to fault. The multimedia screen jutting out the top of the dash is a little old school these days, but the materials and quality are top notch.

Measuring 4650mm long (with a 2829mm wheelbase), 1845mm wide and 1660mm tall, the GLB35 is more like the GLC43 in size than the GLA35, making it a mid-size SUV despite its small underpinnings. And that is good news for practicality.

Cargo capacity with the 50/50 split-fold third row stowed is more than solid, at 565 litres (VDA), but it can be increased to a cavernous 1800L with the 40/20/40 split-fold middle bench also not in use. If six or seven passengers are onboard, though, there’s very little room to move.

Nonetheless, the boot is still well packaged, featuring a huge aperture, no load lip, and a flat floor, which make loading and unloading bulkier items a hell of a lot easier. And even the load cover can be stored underfloor when out of action. How good.

There are also four tie-down points, two bag hooks, a side storage net and a 12V power outlet on hand to make matters even easier, while the rear seats can be stowed from the boot.

While we’re on the topic, Mercedes-Benz says the third row can accommodate passengers up to 168cm tall, with the middle bench able to slide fore and aft by up to 140mm.

Yes, I'm too tall, at 184cm, but I can still sit in the very back, although not in total comfort. All in all, about a centimetre of legroom and negligible headroom and toe-room are on offer there for me.

That said, getting in and out in the first place is the real challenge here, with the middle bench unable to tumble forward for easy ingress and egress. Yep, you’re not going to look smooth either way. Children can deal with it, but adults won’t be thrilled.

Therefore, the middle bench is the place to be, even when it’s slid all the way forward. Behind my driving position, it offers about a centimetre of legroom, but this can be increased to several inches by sliding it all the way back.

Either way, plenty of toe-room is available alongside more than an inch of headroom. The latter is more impressive when you consider that’s what you get with the standard dual-pane panoramic sunroof fitted.

Even better, the second row can seat three adults at a pinch, partly thanks to the low transmission tunnel, which means there’s the right amount of space for six fully grown feet across the two footwells. It goes without saying children will again be fine.

Speaking of which, four ISOFIX and five top-tether anchorage points are on hand for fitting up to four child seats across the second and third rows, which makes the GLB35 a serious option for families that like to be sporty.

There are plenty of in-cabin storage options, with the large central storage bin featuring a pair of USB-C ports, while the glovebox is also quite useful, even if it is oddly shaped. And there’s also a sunglasses holder in front of the rearview mirror.

The centre console’s cubby isn’t really designed for storage, with it basically taken up by two cupholders, another USB-C port and a wireless smartphone charger.

The front door bins can accommodate one small and two regular bottles each, which is great, while their rear counterparts can take one small and one regular apiece.

Second-row occupants also have access to a fold-down armrest with another pair of cupholders, but being of the retractable variety, they’re flimsy.

These passengers also have two USB-C ports, with the pair folding out below a small cubby and air vents, which are found at the back of the centre console. Storage nets are also fitted on the front seat backrests.

And don’t worry; the third row gets in on the action, with two cupholders (one regular, the other small) splitting the seats, which have individual USB-C ports and device straps to the sides.
 

As - predominantly - a family hauler, the Q5 has always done well in the practicality stakes. And adding a plug-in hybrid powertrain hasn’t changed that. Although you do lose some boot space compared with the petrol models - but more on that in a bit.

Up front, the Q5 has plenty of nooks and storage slots in the console, including a longer shallow slot to hold phones. The central bin is deep enough and the door bins can swallow big bottles and more. Housing the phone charger on the top of another storage spot in the console works as it can be hidden by the larger storage lid for security.

As the Q5 is older than some of Audi’s fresher models, there are physical buttons for things like air conditioning, seat heaters, and controls for drive modes and other vehicle functions.

It might not look as schmick as having a screen to house everything, but from a practicality and safety perspective, it’s welcome.

This approach also extends to the multimedia system which is fairly simple to navigate with a logical menu. Audi’s system gets a tick, as does the digital cockpit - something the brand pioneered.

While the leather appointed seats in the SUV are nice, the quilted Nappa leather seats in the Sportback are much more luxurious. And the ‘Rotor Grey’ colour scheme is simply beautiful. They offer more than enough support in the front row and they are comfy without being super plush.

There’s ample leg and headroom in the front row.

That is the same for the second row. So much headroom even with a panoramic sunroof. And behind my 183cm (six foot) driving position, there was room to spare in front of my knees. It’s such a good size.

Also, the rear seats have some bucketing so passengers will feel a little spoiled. There’s also knee-level air vents, map pockets, two USBs and a 12-volt port, a fold-down armrest with cupholders and ISOFIX points on the outboard seats.

The rear row folds 60/40 and there’s decent room in the boot, which has a power operated tailgate. 

Given some of the PHEV hardware sits directly under the boot floor, it’s little surprise that the SUV version (465 litres) loses 55L of space compared with the petrol-powered 45 TFSI.

Similarly, the Sportback (455L) drops by 45L. Also, despite the swoopy roofline, the Sportback only loses 10L of cargo space compared with the more practical looking SUV.

Those PHEV bits also mean there is no spare wheel - only a tyre repair kit.

Dipping its toe back in the plug-in hybrid market, Audi is keen to appeal to buyers looking to reduce their carbon footprint, but also to driving enthusiasts requiring a bit of zing with their environmental credentials.

That’s where the Q5 55 TFSI e quattro comes in. Audi Australia had the option of introducing a less performance focused Q5 PHEV grade, but opted instead for the higher output model.

Audi sees this as the SQ5 you buy when you want to save the planet. And the 0-100km/h sprint time of 5.3 seconds suggests it’s pretty close.

Pricing for the 55 TFSI e quattro starts at $102,900, before on-road costs, for the SUV body style.

Opting for the Sportback carries a $7300 premium, making the price $110,200. But you get some more gear in the Sportback over the SUV, including the S-line interior package, and Matrix LED headlights with dynamic front and rear indicators.

Other equipment standard on both grades includes a panoramic sunroof, hands-free power tailgate, ambient lighting (with 30 colours), keyless entry and start, front leather-appointed seats with heating and power adjustment, three-zone climate control, a 10.1-inch multimedia touchscreen with wireless Apple CarPlay and Android Auto, digital radio, 10-speaker audio, auto-dimming interior mirror and 20-inch Audi Sport alloy wheels.

You can opt for different 20-inch wheels or 21-inch hoops as well.

The 'Technik' option pack costs $4900 for the SUV and $4700 for the Sportback and adds a head-up display, a more premium Bang & Olufsen audio system, and high-tech head or tail-lights, depending on the body style.

All in all it’s a healthy standard features list. I’ve said it before recently, but it’s worth repeating - it’s good to see premium brands including more standard features in their models, rather than making everything an option.

That said, maybe heated rear seats (as well as the standard front seats) might have been a nice addition. 

So, how does the Q5 compare with its PHEV counterparts? Its most obvious rival is the BMW X3 xDrive30e which is more expensive at $111,800.

Then there’s the Range Rover Evoque R Dynamic HSE ($104,310) and Volvo XC60 Recharge ($101,990), which line up closely with the Audi, while the Lexus NX450h+ undercuts them all ($91,423).

The GLB35 is powered by an uprated version of the GLB250’s 2.0-litre turbo-petrol four-cylinder petrol engine, with the AMG-fettled version producing a more substantial 225kW of power from 5800-6100rpm and 400Nm of torque from 3000-4000rpm (up from 165kW/350Nm).

This version is also matched to an eight-speed dual-clutch automatic transmission as well as Mercedes-AMG’s front-biased but fully variable 4Matic all-wheel-drive system.

Thanks to this combination, the GLB35 can sprint from 0-100km/h in just 5.2 seconds with launch control enabled, while its electronically limited top speed is 250km/h.

The Q5 pairs a 2.0-litre four-cylinder turbo-petrol engine - found in many VW Group products - with a plug-in hybrid set-up that includes a lithium-ion battery pack and an electric motor.

The total system output is 270kW of power and 500Nm of torque, which is impressive. In fact, it has more power - but a little less torque - than the SQ5 performance flagship. 

It drives all four wheels thanks to Audi’s quattro all-wheel drive system, and does that via a seven-speed dual-clutch automatic.

The GLB35’s fuel consumption on the combined-cycle test (ADR 81/02) is 8.3L per 100km, while its carbon dioxide emissions are 186 grams per km. All things considered, both claims are pretty decent.

In our real-world testing, though, we averaged a high 14.1L/100km over 75km of driving split between highways and country roads, so not your typical mix, then. A heavy right foot also played into that result, so expect a better return after a regular run.

For reference, the GLB35’s 60L fuel tank can be filled up with 98RON petrol at minimum.

The PHEV’s battery capacity is 17.9kWh and that ensures the Q5 has an electric driving range of up to 55 kilometres on the WLTP protocol. 

Audi says the average daily commute of an Australian is 35km, so technically many people could get to work and back using electric power only.

It might not sound like a huge amount, but it’s more than the 41km offered by the BMW X3, although it doesn’t come near the Lexus NX’s 87km claim.

Energy consumption is rated at 23.9kWh/100km, and the official fuel consumption figure for the Q5 is 2.0 litres per 100km - bettering the X3’s 3.2L/100km figure but not as frugal as the Lexus (1.3L).

It has a 54-litre fuel tank and emits 45 grams per kilometre of CO2.

The Q5 PHEV has a Type 2 plug and comes with a charger to add more juice at home.

It has an AC charging capacity of 7.2kW and it will take two and a half hours to fully charge using a home wallbox charger. You can also plug it into a regular wall socket at home and it’ll be charged up in about eight hours, or overnight. It's not capable of DC charging.

Don’t let the GLB35’s family friendliness fool you, this is an SUV that can get up and go.

The engine’s extra power and torque over the GLB250 are immediately felt behind the wheel, with the GLB35 accelerating with the vigour of an all-wheel-drive hot hatch, which makes sense given their similar claims.

And if you have one of the sportier drive modes engaged, the booming noise generated is also special – even if a lot of it is of the artificial variety, pumped into the cabin to make occupants feel like things are getting serious.

What is genuine, though, is the well-rounded transmission, which is characteristically quick with its upshifts. At the same time, it’s also relatively smooth, even at low speed, which has proven to be a challenge for dual-clutch units over time, but not here.

To earn the AMG badge, the GLB35 goes even further with other mechanical upgrades, including sports tunes for the suspension and steering.

Specifically, the GLB35’s independent suspension set-up not only consists of MacPherson-strut front and trailing-link rear axles with adaptive dampers, but also introduces new steering knuckles, transverse control arms on the front axle, and a stiffened subframe.

The resulting ride is actually quite good. Yes, the extra firmness over the GLB250 is noticeable – particularly in the sportier drive modes that stiffen the adaptive dampers all the way – but it’s by no means a deal-breaker.

That said, it’s worth noting our test vehicle was fitted with the optional 21-inch alloy wheels ($1990), so the GLB35’s like to ride even better on its standard package.

This is remarkable considering the handling improvements made, with the GLB35 managing body roll and pitch better than the GLB250 when pushing hard into and around corners, coming out of which grip is plentiful thanks to the all-wheel-drive system.

Thankfully, the standard-fit high-performance braking package consisting of 350mm front and 330mm rear discs with four- and one-piston callipers respectively helped it wash speed away with ease when attacking the twisty stuff with intent, even with 1857kg (kerb) to deal with.

Also on hand is electric power steering, which is speed-sensitive and has a variable ratio in the GLB35. Basically, it’s quicker when you want it to be, remaining on the lighter side in hand until you engage one of the sportier drive modes and weight is increased markedly.

The Q5 has always been the driver’s pick among its peers - specifically the BMW X3 and Mercedes-Benz GLC. You could argue a Porsche Macan is more engaging and you’d probably be right. But of those immediate German rivals, the Q5 takes the cake.

Adding a PHEV powertrain and the circa-300kg of extra weight that brings should impact dynamics - but somehow, it doesn’t. 

First of all, the Q5 PHEV can do the 0-100km/h dash in just 5.3 seconds which is hot hatch territory. 

But the really impressive thing about this Q5 is how well it handles, despite that extra weight. The battery pack is housed under the boot floor, and Audi engineers have done a bang up job in ensuring it retains that dynamic prowess it's known for. 

We drove on some delightfully twisty roads in the Gold Coast hinterland for this launch event, and the Q5 didn’t miss a beat.

It maintained composure when pushed into tight corners, and had plenty of grip. And the electric urge coming out of those corners - providing you have battery charge left - only helps the experience.

Typically sharp Audi steering is indeed present and welcome.

Riding on 20-inch Audi Sport alloy wheels, and with a sporty bent, you’d think the ride quality would be impacted. But that was another pleasant surprise.

The Q5 soaks up corrugations with the standard suspension set-up, and the tyres have a decent sidewall. So no unpleasant sharp bumps detected.

The cabin is reasonably well insulated from most outside intrusion as well.

The Q5 plug-in counts an impressive level of safety gear, including eight airbags in total, although that does not include a front centre airbag.

It comes with the usual suite of driver aids, including Audi’s ‘pre-sense city’ system that activates emergency braking at speeds up to 85km/h, ‘pre-sense front’ emergency braking up to the Q5’s maximum speed, as well as attention assist, an active bonnet, a tyre pressure monitor, and hill descent control. 

It also features adaptive cruise control, lane keep assist, blind spot monitor, safe exit assist, cross traffic alert and a 360-degree camera with an excellent display. 

While the rest of the Q5 range is covered by a five-star ANCAP safety rating dating back to 2017, the Q5 plug-in hybrid remains unrated for now.

As with all Mercedes-AMG models, the GLB35 comes with a five-year/unlimited-kilometre warranty, which currently sets the standard for the premium market. It also comes with five years of roadside assistance.

The GLB35’s service intervals are long, at every 12 months or 25,000km (whichever comes first). Better yet, it’s available with a three-year/75,000km capped-price servicing plan, but it costs $2750, with the third visit alone incurring a $1300 charge.

The Q5 comes with Audi’s five-year/unlimited kilometre warranty. This was an increase on its previous term that Audi announced at the start of 2022. The PHEV is also covered by an eight-year/160,00km battery warranty.

Service intervals are every 12 months or 15,000km, whichever comes first, and Audi offers a capped-price service plan for five years that costs about $3500 all up. That’s a little pricer than BMW and Volvo’s plan.