BMW XM vs Audi SQ7

What's the difference?

It’s pretty obvious the XM is designed to impress people with big wallets and an appetite for a techy experience that’s also not without a few green credentials. The ability to motor around as a fully-electric vehicle for up to 80km or so is a big plus and the electric-ballroom interior vibe is hard to ignore, as well.

But from our perspective, the full-fat, twin-turbo V8, while offering startling performance, is perhaps a lost opportunity to follow some of BMW’s competitors into the engine-downsizing space. Then again, when you floor the throttle and 2700kg hurtles forward like a big dog on a short chain, you can see where BMW is coming from.

Perhaps the biggest letdown is the ride quality – or lack of it. While it’s understandable BMW wanted the most dynamic version of the XM it could manage, the end result plays against the vehicle’s otherwise long suit of hyper-luxury. Doubtless, BMW would argue that to soften the chassis would have been to introduce a chink into a no-compromise product. But, perhaps, sometimes a sensible compromise is the way forward.

There are newer options than the current Audi SQ7 and SQ8, including those which use the same platform, but don't write these luxury large SUVs off just yet.

It's a rare thing that a vehicle costing $200,000 has an air of pragmatism about it, but the SQ7 does. Its sensible leather upholstery, decent practicality, towing capability and near-excess of interior space make it a great family wagon.

As a counterpoint, the sharper looking SQ8 has minimal trade-off in comfort and interior room (at least for five) and is the kind of statement piece you'd expect for the price — especially in one of its loud paint colours.

Whichever way you leap, it's true that while the SQ7 and SQ8 are ageing, they are doing so gracefully and remain a superb option in this segment.

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

There’s nothing subtle about the way the XM looks. It probably pulls up just short of brutalist (or maybe not) but even those who find its slabs and angles attractive have to admit that it’s bold.

The now-trademark giant nostrils set the mood and the rest of the exterior suggests some kind of armoured transport for presidents rather than wheels for the school run. Doubtless, this will hardly be seen as a fault by those in the market for such a thing.

The real surprise here is that the XM does not share a bodyshell with any other production BMW. Sure, the V8 petrol engine and wheelbase are common to other BMW and M models, but the sheet metal is the XM’s and the XM’s alone. That in itself, is quite a statement of intent.

If you're getting an SQ7, you'll want to tick the 'Black Pack' box because otherwise there are a lot of high-gloss silver details, especially at the rear that don't suit this tall and slightly awkward SUV.

The SQ8 is more convincing, appearing wider on the road with its new 'singleframe' grille design seemingly sucking it even closer to the tarmac like some kind of overgrown Audi RS3.

Both get an attractive new 2D design for the Audi rings and L-shaped grille details. These aid the SQ7's front end which is more muscular and purposeful than before.

The attractive lights have moved higher up the front end for enhanced presence, too. You get Matrix LEDs as standard but these candles are the hardcore HD Matrix items that feature laser light for further even longer light throw at night. They are simply awesome.

Fresh 22-inch alloy wheels and minor changes to badges finish off the exterior treatment for both cars.

The SQ8's bold specification — finished here in 'Sakhir Gold' — sets it apart from other SUVs as the metallic gold paint shimmers in the sunlight. The SQ8 is also available with whopping great 23-inch alloy wheels that you see here.

Inside, both cars share a similar architecture with 10.1-inch touchscreen for the multimedia and an 8.6-inch item below for heating and ventilation settings. 

The SQ7 is a great example of a design ageing without dating, its confident horizontal lines and well-proportioned cabin features are as attractive as they were at launch, if less impressive than the related VW Touareg's whopping 15-inch screen or the minimalist Range Rover Sport.

Adding to the feeling of quality is that signature Audi smell — a combination of leather and the Sensory Package's perfume, no doubt. The SQ7 keeps a round-bottom steering wheel which remains one of the best in the business, it's just the right size and diameter trimmed with dimpled leather.

Final flourishes include the optional contrast red stitching and seatbelts as well as eye-catching turned aluminium trims.

Given the vast exterior dimensions and a weighbridge ticket the wrong side of 2700kg, it may come as a surprise to learn that the XM is strictly a five-seater with not even an optional third row.

That said, the uber-SUV Lexus LX in flagship, Ultra Luxury, trim offers just four seats in deference to the VIP clientele it’s pitched at, but also comes complete with reclining rear seats and a passenger’s side footrest which the XM can’t match.

Staying in the rear seat, there’s lots of legroom and plenty of space under the front chairs for feet. A lot of that is down to the wheelbase the XM shares with the BMW X7, and even behind a tall driver, there’s lots of space. In fact, compared with a BMW X5, there’s a full 150mm of extra legroom.

The pew itself flows into the door trims for a lounge effect which looks great with the contrasting light-coloured trim, and the centre arm-rest folds down to reveal a pair of cupholders. Extra storage space can be found in fold-out pockets in the rear of each front seat which also house a small, lidded panel that opens to reveal USB ports and power sockets. Dual-zone climate controls are also part of the rear-seat experience.

The gee-whizz stuff hasn’t been ignored, either, and the prismatic roof lining is nothing if not a talking point. But would a panoramic sunroof have been of more value to many buyers? The ambient lighting is a nice touch, too.

Up front, the view is dominated by the giant, twin curved animated dashboards. They deliver information and lots of it, to the point where it can almost seem a bit overwhelming.

The head-up display helps simplify things, but there’s absolutely no doubt there’s a lot going on in this cabin. Again, this is modern luxury motoring, but it remains that the menu system will take time to learn, even if the touchscreen function gives you an option on how you control things.

Multi-adjustable front seats are part of the deal and there’s an M-spec steering wheel which is heated. And although it features plenty of buttons, isn’t as daunting perhaps as the multi-spoked equivalent in some high-end AMGs of late.

The stereo system is also worthy of a mention, being a Bowers & Wilkins unit with roof mounted speakers and no less than 1500 watts of power. Digital radio is part of the package.

Even though it doesn’t offer a seven-seat option, luggage space in the rear of the XM is hardly class-leading. Cargo volume with rear seat up is 527L and 1820L with it folded.

Much of the wheelbase is devoted to rear-seat stretching room and although the batteries for the electric motor are positioned under the rear seat, the floor of the cargo area seems quite high.

The difference between aged and dated is best summed up, though, by the excellent usability of the SQ7's cabin controls.

The separate screen for ventilation, for example, makes it simple to adjust seat or vent temperatures without interrupting the main screen's navigation instruction or other media systems.

When using wireless Apple CarPlay and Android Auto the top screen is entirely devoted to the other software with no remnants of Audi's system. It runs smoothly at all times.

Switching back to Audi's system, and there's a lack of contrast to the dark main screen and navigation. The touch targets are huge, though, and the satisfying click of the haptic feedback is welcome when driving. It seems expensive and natural in a world of feel-free touch operation.

Audi's 12.3-inch digital driver's display remains one of the best in the business. Legible and customisable with bespoke sport modes and the ability to show a full-size map, if you wish.

You can keeping devices charged with a wireless pad or there are two USB-C ports under the cushy centre armrest. A 12-volt socket is also available, and two more charge points are found in the back.

If there's one criticism in the front, it's the fairly limited storage. The door bins are big enough for a 600mL bottle but not much more and beneath the armrest the tray is shallow. The only other storage spots are the two cupholders which are the perfect size for a small take-away coffee.

While on the critiques, the drive mode selector is awkwardly hidden near the passenger below the touchscreen.

The seats are amazingly comfortable with ample support and power adjust for everything, including under-thigh length and bolsters. Several massage programs can be accessed through the menus, too.

Continuing the comfortable seating, the SQ7's second row is capacious with plenty of head, leg and toe room even for those over 180cm.

The bench slides forwards and backwards manually and the backrest is adjustable. A fold-down armrest contains two more small cupholders, and there are two separate climate zones, two vents and heated outboard seats.

However, folding and unfolding the second row is a bit complex and quite heavy work with a strange mix between electric and manual movement to access the third row — a Nissan Pathfinder does this better.

Once back there, the third row is passable for adults providing the second row is slid forward.

There are ISOFIX ports and top tether anchors for both power-deployed third row seats, so you can fit up to five children's seats in an SQ7.

The SQ8's second row is still generous but you do lose a small amount of headroom owing to the sloping roof design.

You also sacrifice some boot space, at 608L with five seats and 1755L with the second row folded. That's still a lot but the spacious SQ7's 793L/1921L figures are even better and 295L with all seven seats up is respectable. Both have sturdy 40/20/40 split-fold rear seats.

As the vehicles are equipped with air suspension, owners can raise or lower the boot floor to make it easier to load bulky objects if needed. A power tailgate is standard on both models.

A retractable luggage cover, netted pocket, boot lights and some underfloor storage complete the boot, however both cars lack a spare tyre of any sort. A tyre inflation kit is included.

Audi's range of Q7 and Q8 large SUVs starts at $117,284 for the 45TDI and there's a plug-in hybrid version from $152,284, both before on-road costs. The flagship SQ7 and SQ8 are $174,815 and $178,815, respectively.

The pair is a rare example of a discounted new car, albeit by a slim $585, so you'd expect these behemoths to offer comprehensive standard specification.

Features such as 22-inch alloy wheels, ambient interior lighting, soft close doors, power-adjust heated and ventilated seats, quad-zone climate control, 'Valcona' leather upholstery, a 17-speaker Bang & Olufsen sound system, full-length sunroof, navigation and a head-up display are included.

Naturally, options are available in packs and standalone choices with all vehicles we drove featuring at least one of the expensive box-ticks.

The 'Sensory Pack' seems a logical choice, bundling a 23-speaker, 1920-watt sound system with raising tweeters, 'Dinamica' headlining, massage seats, heated rear seats, Audi's air ioniser and interior perfume, extended leather upholstery and rear sun shades for $14,400.

Another major option is the $10,900 'Dynamic Package' with active roll stabilisation and Quattro Sport rear differential.

Stand-out stand-alone options include HD Matrix LED and Laser headlights combined with customisable OLED rear signatures ($3950) and the black exterior styling packages ($1850, or $2550 for the Plus version).

The as-tested price for the tow pack-equipped ($1500) 'Daytona Grey' car we spent most time in was rather high at $209,215 before on-road costs — that's over $30K worth of extras.

Here’s where the XM starts to justify its price-tag. While the use of an electric motor to boost a petrol engine has allowed some manufacturers to reduce the capacity of the latter, no such restraint has been shown for the XM. Instead, it gets the full 4.4-litre, twice turbocharged V8 that we’ve come to know and love from this brand.

It’s not that this is the engine’s first date with hybrid technology, but the mild hybrids that have come before it can’t match the XM for sheer brutality when both power units are unleashed.

The petrol V8 can muster up 360kW and 650Nm which, when boosted by the electric motor, jumps to a total of 480kW (combined) and 800Nm.

While the petrol engine drives through an eight-speed torque-converter automatic, the electric motor also drives through the transmission, an arrangement that is a bit different to some hybrids which use the petrol engine for the rear axle and the electric motor to drive the front wheels.

Of course, the requirement for the XM to feature permanent all-wheel drive, regardless of what power unit is running at the time, forces this layout.

Speaking of all-wheel drive, The XM’s version of BMW’s 'xDrive' layout has been specifically tuned for this vehicle and includes torque vectoring as well as a limited-slip rear differential.

The system has the ability to vary the torque split front to rear, with the default rear-bias giving a more sporting feel on good surfaces. An active rear differential also helps give the car a rear-drive feel.

As well as modes for 'Hybrid', 'Electric' and 'eControl' modes, the XM sticks with the M tradition of offering two M buttons which can be configured to set the parameters for steering, driveline, chassis and, in the case of the hybrid XM, the degree of braking regeneration offered.

Four-wheel steering is also part of the XM’s repertoire and, interestingly, there’s no air suspension here; just conventional steel springs.

But it does feature an electrically-adjusted anti-roll bar system which aims to strike a happy medium between what the driver wants and the road conditions demand.

The SQ7 and SQ8 both use a 4.0-litre twin-turbo 'hot vee' V8 petrol after the diesel SQ7 was abandoned in mid-2022.

It is the same engine you'll find in just about every application of this MLB platform, including the Porsche Cayenne, Bentley Bentayga and Lamborghini Urus — though it makes more power elsewhere.

In Audi's two medium-sporty SUVs it produces 373kW at 5500rpm and 770Nm between 2000-4000rpm.

In practice, it's a swelling, punchy engine without much top-end sparkle — though 4.1 seconds to 100km/h is nothing to scoff at.

The V8 also produces a rather splendid soundtrack, striking the right balance between Detroit burble and motorsport bark for this application.

An eight-speed torque converter auto transmission has been retuned for improved shift logic and it remains buttery smooth. It's pleasing enough just manoeuvring slowly around a car park, where you can feel just well calibrated the long travel throttle and transmission logic are.

A 25.7kWh lithium-ion battery provides the power for the electric drive. It’s mounted under the rear seat and can produce a purely electric range of between 82 and 88km (based on WLPT test protocols).

Charge time from a conventional wall-box is said to be about four hours but, interestingly, the XM has no provision for DC fast-charging.

Fuel consumption (combined cycle) is an EV-typical 2.7 litres per 100km, which equates to a low 61g/km of CO2.

Once you’ve depleted the battery on a highway journey, expect the petrol V8 to consumer somewhere between eight and nine litres per 100km at cruising speed.

Using EV mode means zero-emission operation but, as with any electric car, how the power is generated to recharge it determines its real-world green-ness.

With 2340kg to heave around, not even the 48-volt mild hybrid system can save the SQ7's fuel consumption — it's a thirsty beast.

The rated ADR combined cycle (urban, extra-urban) figure is 11.8L/100km and indulging in the ample performance resulted in 16.5L/100km on the trip computer. The SQ8 was much the same.

The SQ7 is certified to tow up to 3500kg (braked), equal to a Toyota LandCruiser or Nissan Patrol.

A fairly large 85L tank gives the SQ7 a theoretical driving range of around 720km from a fill-up. Naturally, 98 octane unleaded is required.

While any M car is supposed to be rapid and dynamic, it’s also true that the over-arching perception of big SUVs is that they’re comfortable and plush. None of which explains the ride in the XM.

Regardless of how you fiddle with the settings, the ride is always brittle. Those big tyres with their minimal sidewall somehow manage to find every crack and join in the road, and it’s these sharp-edged imperfections that thump through to the cabin the most vocally.

It’s enough to make you wonder who this car is going to appeal to. Will it take to race tracks? Almost certainly not. So the whole point of these suspension settings might be a bit lost on some people.

Performance, meanwhile, is insanely rapid for something that could pass as a bulk carrier. The biggest giveaway to the mass is the transmission’s earnest attempts to keep everything moving by feeling a bit hyperactive on downshifts.

Using the ratios is always going to be the strategy, but with all that torque, maybe it’d be nice sometimes for the trans to hang on to a taller gear and let the boost blow it towards the next corner.

The sound track? Polarising. Even if it doesn’t convince you that Hans Zimmer (who developed the various electronically-synthesised noises the XM makes) should stick to winning Oscars, the augmented sounds are background noise rather than the main event here.

Even the petrol V8’s naturally stirring backing vocals have been electronically tweaked with debatable results.

That said, it’s nice to have something to listen to that isn’t the insistent tyre roar which becomes even louder on coarse-chip surfaces.

Steering effort is light but there’s not a lot of feedback in terms of actual feel. In fact, it’s borderline detached and only the sheer speed of the rack confers any athleticism.

Also, the rear steering seems to come in a few milli-seconds after the front has started to turn. And for all that all-wheel-steering agility, this is never a car that shrinks around you.

Our drive loop started in South-East Sydney where the SQ7's burbly V8 and air suspension fitted right in, easily soaking up the worst of the concrete expansion joints and sharp-edged potholes.

It is a joy to waft around in the refined SQ7 with its remarkably good vision out the front and back (with 360-degree cameras to help elsewhere). Standard rear-wheel steer allows the back tyres to rotate up to 5.0 degrees, giving the 5072mm long SQ7 a better turning circle (12.5m) than a Q3 small SUV.

Its driven home further by the excellent drive mode customisation. Along with the standard programs, you can set an 'Individual' mode up with various selections for the suspension, steering, powertrain response and exhaust noise.

Following the SQ7, our time in the SQ8 took in some more twisting roads and the combination of 23-inch alloys with firmer suspension settings meant that, even in 'Comfort', 'Auto' or 'Balanced' drive modes, the coupe-styled model had a busier ride.

Both SQ7 and SQ8 featured 'Sport' adaptive air suspension, sitting 15mm lower than normal with the ability to drop the ride height up to 40mm in 'Dynamic' mode or raise it 50mm in lift mode to get out of sticky situations.

Audi chose not to specify the Dynamic pack on the SQ8, though, and the difference is noticeable compared to the SQ7. The coupe SUV rolls a little more in hard cornering and doesn't engage the rear end in quite the same way.

Back in the SQ7, turn in may feel a little less sharp owing to the taller height but the active roll stabilisation and Quattro electronically-controlled limited-slip differential splitting power between the two rear wheels makes for a more confident vehicle with better punch out of corners.

Grip is prodigious and the SQ7 is always in control with 285/35R22 Bridgestone Turanza T005 tyres.

A 2.4-turn lock-to-lock steering system is well-judged, remaining light in Comfort but adding enough weight and precision in Dynamic.

The brakes — 400mm front rotors clamped by six-piston calipers with optional ceramics — are reassuring and feel Autobahn ready. 

The Audi SQ7 with Dynamic Pack is like an Olympic swimmer that's put on some kilos and had a few kids but can still gap his teenage son in a 50-metre freestyle race.

This is perhaps the perfect expression of Audi's 'S' models USPs, being totally normal when pottering despite huge reserves of talent. 

The Audi SQ7 is currently unrated by local ANCAP safety authority but Euro NCAP awarded a Q7 50TDI a maximum five stars in 2019.

It features eight airbags, adaptive cruise control, lane-keep assist, blind-spot monitoring, rear cross-traffic alert, surround-view monitor and exit-warning system to stop occupants dooring cyclists.

The adaptive cruise control is smooth and natural, although we found the lane-keep and lane-trace programs to be a little overbearing. Both can be easily disabled by holding the button at the end of the indicator stalk for about five seconds.

Like a lot of manufacturers, BMW knows consumers can be leery of EV tech when it comes to the cost of battery replacement. So, as well as the five-year/unlimited-kilometre warranty on the whole vehicle, there’s also eight years or 160,000km of cover for the high-voltage battery.

Servicing intervals are based on how the car has been used and it will inform the owner when a service is required.

A servicing package is included in the purchase price and BMW even throws in three years of roadside assistance.

Audi recommends SQ7 and SQ8 owners bring their car in for a service every 12 months or 15,000km.

Service pricing is not cheap, with a five-year package costing $4600 for either model. For reference a basic service plan for a BMW X5 costs $3450 for five years.

Audi has moved to a five-year, unlimited kilometre warranty with owners able to extend that (for a fee) up to nine years with Audi Advantage. An extra two years of warranty and scheduled servicing costs $4360 for the SQ7 and $4160 for SQ8.

Additionally, customers get access to Audi's loyalty programs with event invitations, ambassador experiences and discounts offers from select partner companies.