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Munich's latest limo finally meets our timing gear, in full-size PHEV form

While it isn’t like the maker of a Teutonic limousine to leave much to chance, there is evidence that the creators of the latest BMW 7 Series – which now finally undergoes a full Autocar road test with a combustion engine under its bonnet – courted old-fashioned good fortune in just about every way they could.

The number seven is considered lucky the world over – and in China, one of BMW’s biggest global markets for the 7 Series, particularly so. It just so happens, then, that this, the seventh model generation of the car, is codenamed G70. It has been in development since 2017. BMW makes seven versions of it (leaving out the BMW i7, but counting the armoured 7 Series Protection). And it entered production on the first day of the seventh calendar month of 2022 – seven years to the day after the sixth-generation car had done so.

With diesel and (even mild-hybrid) petrol options studiously omitted from the UK range, however, the choice for those of us who don’t want an electric i7 is between two plug-in hybrids: a 483bhp 750e xDrive (which qualifies for benefit-in-kind tax at less than 10% of its showroom price) and a 564bhp M760e xDrive (which, since it emits more than 50g/km of CO2, isn’t so tax-efficient). We elected to test the former.

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DESIGN & STYLING

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Unlike with previous generations of the 7 Series, there is only one wheelbase available on this car. So exactly how controversial – revealing, even – should we consider it, for a brand like BMW, that the version it omitted was the short wheelbase?

This car now isn’t remotely modest in size – even by long-wheelbase limo norms. It’s almost 100mm longer overall than Mercedes’ long-wheelbase S-Class; more than 70mm longer than a Bentley Flying Spur.

Upper-tier versions of the car come with Integral Active (read active four-wheel) steering as standard, as a means of mitigating that outright size. Our 750e test car had that as an option – in addition to active anti-roll bars (which BMW bundles into another option pack called Executive Drive Suspension). Adaptive air suspension is standard fit – itself something of a departure on a car that used to offer steel coil suspension in opposition to its air-sprung rivals, as a gesture to those who might prefer a more ‘natural’, connected-feeling ride. 

The car is founded on the same Cluster Architecture (CLAR) as the current 5 Series, iX and X3 – a development of that of the old 7 Series – and so it has a unitary-style chassis made of a mix of aluminium, steel and carbonfibre composite. A longitudinal engine connects to a gearbox-mounted electric drive motor for the hybrid system, with the drive battery carried under the cabin floor. Both UK-market PHEVs use xDrive mechanical four-wheel drive.

Our 750e test car weighed 2472kg on the proving ground scales, but outright mass is not the only apparent cost of its size and fitted technology: the weight distribution, at 53:47 front to rear as tested, also proved a little un-BMW-like.

And that’s to say nothing of its particular exterior design, which is of course a subjective factor. For what it’s worth, most testers found it more troubling than challenging – and none a selling point.Has the advanced suspension and steering tech to marshal its heft

INTERIOR

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Our test car was quite modestly equipped, missing both BMW’s Theatre Screen rear-seat entertainment package and its Executive Lounge seat option (which allows you to extend and incline the cushion on the passenger side, and recline the seatback slightly).

Both were fitted to the i7 we tested in 2023, however; and so we already know that, while it isn’t quite in the league of a Mercedes-Maybach S-Class or Lexus LM for sleeping-seat-style travelling comfort, this car wants for little in the way it can cater to those all-important patrons in the second row.

The ‘button’ to depressurise the fuel tank, and open the filler, is to the driver’s right, behind the memory seat controls. It can be hard to find when that glossy plastic is reflecting daylight.

Even without those options, it conjures a special ambience for those rear-seat travellers. This is especially the case at night, when its ambient-lit audio speakers glow invitingly behind their laser-cut metal grilles, and its fi lament-lit Sky Lounge glass roof gives off futuristic, Tron Legacy vibes.

Each back-row passenger has a smartphone-sized touchscreen in their door console to control entertainment options, lighting and seat heating. The seats themselves don’t adjust for angle or extend in the cushion as standard, but they feel thick, soft and supportive under your backside, and leave you with abundant space and 880mm of rear leg room (Mercedes-Benz S580e L: 860mm, Rolls-Royce Ghost S2 Black Badge: 840mm). The sheer size of this car certainly pays off in that respect.

Up front, there’s a lot more material chintz and digital razzle-dazzle about the 7 Series’ cabin ambience than it ever used to trade on – enough to match Mercedes’ equally flashy S-Class – with the controversial, colour-selectable ‘interaction bar’ lighting element competing hardest for your attention. Quite what it looks like (opinions ranged from a layer of molten kryptonite within a continental shelf, to less complimentary sentiments) can be debated. Less subjectively, we found the way that its surface reflects light during the day problematic, since it also carries key secondary controls that can become hard to spot.

Beneath the glossy attention-grabbing first impression, however, the 7 Series’ cabin has the excellent tactile quality you would expect for the money, and its driving position is excellent, very comfortable and widely adjustable. It’s a fully committed, technologically avant-garde, 21st-century luxury proposition of some ambition, and doesn’t risk selling itself short in any respect.

Multimedia - 4.5 stars

Option up BMW’s 31in, roof-mounted Theatre Screen video console, with its Amazon Prime TV integration, and your VIP passengers in the back should want for nothing as regards entertainment on a long journey.

Up front, BMW’s Live Cockpit Professional infotainment system remains one you can operate either via the screen itself, using the iDrive cursor controller, or by voice command. It has good top-level responsiveness and usability, with a primary nav bar at the foot of the 12.3in screen, a customisable home screen and useful physical menu keys on the centre console. Voice control, for us, was a bit hit and miss in recognising key commands.

The system does seem to have a lot of sub-menu screens, so you find yourself hitting ‘home’ a lot – but thanks to those menu shortcut keys, key ADAS functions are easy to access and disable. Some of the system’s screens can be a little needlessly bright and glare-heavy, but overall it’s an impressive, quite sophisticated set-up.

ENGINES & PERFORMANCE

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If you were developing the ideal chauffeur’s PHEV for 2025, a BMW turbo straight six might well be the engine you would choose for it, given its many celebrated running refinement qualities.

And in this car, the straight six meets all of those lofty expectations. It starts and stops smoothly enough to barely be noticed; it raises its voice just loudly enough for a sweet six-cylinder hum to be detected when ‘S’ mode is selected on the cut-glass drive selector. And, if you keep to a fairly laid-back pace, with your inputs progressive rather than hurried, it only ever blends with the car’s electric motor suavely. Press the powertrain to full power, however, and some hints of abruptness begin to present, such as gearchanges becoming snatchier.

In outright terms, the 750e demonstrates plenty of accessible thrust and outright punching power when called to. It out-accelerated the more powerful Mercedes-Benz S580e L we tested in 2022 over every major benchmark save the 30-70mph sprint; likewise the Range Rover P550e we tested in April this year, with the same exception. The M760e extends the PHEV 7 Series’ performance potential even further, should you want that.

The car’s 17.6kWh (usable capacity) drive battery lent it an electric test range of 47 miles in mixed use (slightly longer than both the Mercedes and Range Rover managed), which it tends to deploy judiciously when you have a navigation destination set, in order to get the most benefit from it. Or you can simply exhaust it during urban driving, before leaning on the combustion engine.

However it’s powered, accelerator response is suitably gradual, and brake pedal tuning is medium-soft but correspondingly progressive, without any perceptible change in pedal feel as regen turns into friction braking.

Assisted Driving - 4.5 stars

BMW hailed the 7 Series’ driver assistance technology as the most advanced it had ever fitted to a production car in 2022. Its many ADAS cameras, from Mobileye, have particularly advanced object- and hazard-detection. In certain global markets (the UK not included) they already facilitate limited level-four hands-off driving.

Our test car came with both Driving Assist Professional and Parking Assistant Pro as part of a £5775 options pack. The former delivers a motorway lane keeping system and the latter one that makes getting out of tight parking spaces or underground car parks easy.

The car’s ADAS features do seem quite advanced, and BMW is careful to make them easy to disable. Our car’s lane keeping system was indeed effective, and dependable with its lane perception, on the motorway; its driver monitoring system never bothered us; and most of its systems are gratifyingly customisable – so you can switch things like the ‘undertaking’ prevention on and off, or set a particular speed limit tolerance for the intelligent cruise control.

RIDE & HANDLING

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The 7 Series’ four-wheel steering system does indeed hide its outright size very cleverly at low speed. It’s surprisingly easy to swing into a driveway or parking bay, and wieldy in a three-point turn. Owners with urban use in mind should certainly consider four-wheel steering a key option.

At greater speed, the car has the fairly lightly weighted controls and gentle chassis responses you would expect of it, though perhaps not of a car gesturing to be the default interested driver’s choice in its class. This 7 Series’ priorities are simply elsewhere – and we will come to describe some of them in more detail shortly.

Twenty years ago, both a 7 Series and an XJ could out-handle an S-Class. The Jag has now gone, and the BMW has finally followed the Merc’s dynamic lead. It shows which car had the right dynamic priorities all along.

While not wallowy, it certainly feels medium-soft, and quite pillowy and compliant in how it  goes down a country road. It keeps a level, isolated body very cleverly at ordinary speeds, but clearly doesn’t do so for the sake of any sense of connection with the road surface, or particular engagement of the driver.

Rather than unearthing some hitherto buried sense of poise when you push the car beyond that everyday pace, you certainly feel like you’re taking the 7 Series out of its comfort zone when you hurry it. The nose starts to bob a little; front-axle loading starts to ebb and flow; understeer gently builds into the handling mix; and, however you drive, the DSC system – which, unusually in a BMW, isn’t switchable or tunable beyond the engagement of Sport driving mode – simply gets busier and more proactive to keep so much mass and energy safely in check.

Comfort and Isolation - 4.5 stars

While it might be a slightly different sort of limousine than the one that owners of its various forebears may expect, the 7 Series is plainly very effective at what it does. Although it rode on optional 21in wheels, our test car had excellent ride isolation and bump-thump absorption, which it took a really nasty bit of broken asphalt or aggressive drain cover to trouble.

It doesn’t quite float buoyantly down the road but makes a clear attempt to hover over the surface – declining to heave and roll, but filtering out the impact of lumps and bumps from the gutter almost completely, thanks to its clever active anti-roll bars.

Nothing can ride perfectly – and there are limits to the absorptiveness of the car’s suspension, which you will encounter when it occasionally runs short of wheel travel over a bigger bump, causing a heavy body to suddenly bristle a bit. All the same, this car’s combination of secondary isolation and primary levelness and composure is very impressive indeed.

At a 50mph cruise on Horiba MIRA’s mile straights, we recorded 59dBA of cabin noise, matching the performance of the S580e L exactly. The Mercedes was a decibel quieter at both 30mph and 70mph, to give it its due. Nevertheless, you can tell how much effort BMW has invested in putting this car on a par with its most refined rivals and, subjectively at the very least, you would say that hasn’t been wasted effort.

MPG & RUNNING COSTS

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While you can still buy an Audi A8 for less than £90,000, the 7 Series opens for business at just under £102k – and that’s with the entry-level i7. The cheapest 750e costs from a little below £106k – itself meaningfully more expensive than the most accessible Mercedes S-Class, the mild-hybrid S350d L. So, even as the lesser of two PHEV models, this is an unapologetically expensive proposition, and can afford few weaknesses.

Since manufacturers are still working their way through the Euro 6e-bis emissions and economy certification that all PHEVs must pass by 2026 – and as the UK decides how it will soften the impact of that legislation for both manufacturers and company car tax payers here – it remains difficult to be sure about benefit-in-kind qualification for cars like this. With the information available at the time of writing, however, the 750e’s 24g/km CO2 emissions and 49-mile electric range, according to the WLTP test cycle, seem to stand it in good stead compared with its key rivals, at least one of which (the Mercedes S450e L) seems to be facing a potentially punitive expulsion from the sub-50g/km club.

The 750e has a way of eking out its electric range on a longer journey, rather than using it all in one lump – and it works. After a full charge, on a motorway-intensive 100-mile trip, you can still see a return of close to 75mpg.

The 750e got very close to reproducing that WLTP electric range result in mixed testing, beating the real-world return we saw from the 31.8kWh Range Rover P550e we tested back in April (albeit in notably chillier temperatures).

VERDICT

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The significance of this seventh-generation BMW 7 Series is hard to overstate. It has incorporated EV propulsion and in the UK excised itself of diesel.

But perhaps only when you consider a more classically powered version do you see how much more widely it has changed. It’s not only a larger executive saloon now but also one with a different agenda focused on luxury and refinement; performance blended with electrified efficiency; and digital tech embraced with real enthusiasm.

More traditional core BMW qualities have been made secondary considerations, and the old car’s ability to handle at speed has been traded off.

What has been produced, however (beyond what remains a deeply challenging, but subjective, exterior design), is a car of laser-targeted dynamic strengths, and unmistakable fitness for purpose.

Matt Saunders

Matt Saunders Autocar
Title: Road test editor

As Autocar’s chief car tester and reviewer, it’s Matt’s job to ensure the quality, objectivity, relevance and rigour of the entirety of Autocar’s reviews output, as well contributing a great many detailed road tests, group tests and drive reviews himself.

Matt has been an Autocar staffer since the autumn of 2003, and has been lucky enough to work alongside some of the magazine’s best-known writers and contributors over that time. He served as staff writer, features editor, assistant editor and digital editor, before joining the road test desk in 2011.

Since then he’s driven, measured, lap-timed, figured, and reported on cars as varied as the Bugatti Veyron, Rolls-Royce PhantomTesla RoadsterAriel Hipercar, Tata Nano, McLaren SennaRenault Twizy and Toyota Mirai. Among his wider personal highlights of the job have been covering Sebastien Loeb’s record-breaking run at Pikes Peak in 2013; doing 190mph on derestricted German autobahn in a Brabus Rocket; and driving McLaren’s legendary ‘XP5’ F1 prototype. His own car is a trusty Mazda CX-5.