Lexus LS vs BMW M5

What's the difference?

The LS500 is the least logical version of the most logical option in the ultimate luxury sedan segment in which logic doesn’t often apply at all. 

Take from that what you will, but if it was me being driven around I would definitely be opting for the hybrid version of the LS instead for its smooth electrified driving characteristics and lower operating costs.

Let’s get one thing out of the way: the new M5 is a very good car. Considering the emissions limitations and size increase of its base model, it is an impressive bit of engineering. 

What’s trickier is deciding whether the new car is really better to drive. Less edgy but supremely comfortable and quiet; BMW leaned into the daily usability of the plug-in hybrid M5 rather than amping the petrol-electric system for maximum thrills. And do you know what? That’s fine with me. 

The new M5 still performs on road and track and does an incredible job of hiding its weight (most of the time). Perhaps the G90 is a little more Audi RS6 than F90 in its demeanour but some would argue that’s no bad thing. 

The concept of the BMW M5 is not static, it evolves with the times, and the G90 is no exception. Expect future Competition and CS variants to unlock some extra lunacy. 

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

The distinctive but conservative style of Lexus is on full show across the LS’s massive frame. Like other cars in its class, it’s very much the image of the brand itself with styling points strong, but to me not as impressive as the LC500, which is a definitive expression of the brand.

The LS also has many styling points of the previous-generation Lexus design language which are in the process of being phased out.

The car was only updated last year, bringing with it a more recent interpretation of the brand’s big spindle grille, pointy headlight profile, and angular but traditional rear.

The LS - even in this Sports Luxury guise - does look quite menacing from certain angles. The width and stance of this car is accentuated by its curvaceous rear guards and big square front bumper, with the elegance of a classic three-box sedan maintained in a side profile.

The chrome wheel finish is a bit much for my taste, but there’s no doubt they’re real show pieces. They’d better be, too, because I hear they are incredibly expensive should you need to replace one.

The inside has highs and lows but it’s the place where you can most tell the LS has been on sale for a while.

I love the plush seats, big screen, integrated analogue clock and three-dimensional door card design, which sell the flagship luxury feel.

But this car’s age is on show with its clunky and much maligned 'Remote Touch' pad controller (which Lexus is at long last phasing out in its new cars), last-generation software suite, and its small, crowded instrument cluster.

There are a whopping nine interior trim combinations to choose from and ours has the most recently added black leather and ‘Nishijin Haku’ themed highlights which are meant to be inspired by the way "moonlight sits on an open sea".

The feel is a bit '90s, a rough textured fabric with a silver detailing and elements clad in a thin platinum foil, making you feel like you’re in a classic high-class Japanese taxi.

But I’ll admit it plays well with the ambient lighting effect in the doors, and is a unique selling point compared to the standard leather finish.

The M5’s raw size is what you notice first. The G90 M5 is a whopping 113mm longer, 67mm wider and 37mm taller than the car it replaces, with the wheelbase stretched 24mm.

It is also the most pumped M5 yet, compared to a 520i it is 70mm chubbier at its flared wheel arches. The ‘M5’ insignia on the C-pillar means you’ll know this is the fast one. 

Presence is not in question, then, but beauty? Not the right word. The G90 makes its predecessors — especially the original ‘E28’ — look demure. 

The cabin layout builds on the concept debuted by the iX electric SUV, with twin integrated screens and focus on technology and minimal buttons. Materials are mostly high quality and feel fitting for the M5’s asking price.

For passengers, as you’d expect, the LS is stellar. The massive outboard rear seats offer plenty of room, and are complete with reclining, message, and cooling functions.

Adjustable vents feature, with quad-zone climate, and the screens come with individual headphone jacks and HDMI-in so you can bring with you all sorts of entertainment options for those longer journeys.

Other suitable additions worth noting include the wine cooler (although it’s a bit small for anything other than minibar-sized beverages, hardly the 007 trope of rolling out a full-size bottle of Bollinger), flip-down mirror with a light in the roof, and the touch panel controls in the armrest. I also appreciate the built-in sunshades. Nice touch.

Less impressive is the general vibe of the middle seat. With a large raised centre split in the floor and such wide and lavish outboard seats, the middle seat feels a bit forgotten.

Up front, the practicality offering includes a high level of adjustability for the seats to suit a wide range of driving positions, electrical adjust even for the steering column, and a nice wide seat which you simply sink into.

Of course, soft finishes adorn even unseen parts of the cabin so you’ll never touch a nasty hard plastic, and there are large storage areas in both the doors and centre console box.

This big armrest console also hides the USB connectivity within, and there’s a set of big cup holders with a flip-away lid if you want the wood grain design uninterrupted when they are not in use.

I have to mention the useless touchpad controller here, but hand the brand props for offering a collection of climate shortcut buttons on the dash, an actual volume knob, and truth be told you don’t need the touchpad anyway because the screen is touch. Just be ready for the matching last-generation software, which isn’t the best to use or navigate.

The boot has a volume of 440 litres which sounds plentiful, but the actual use of it is a reminder of one of the reasons SUVs are so popular.

Yes, it’s big and reasonably deep, but putting the largest CarsGuide case in there proved a bit clumsy as you have to lift it over the tall rear bumper and it only just clears the top of the relatively small opening.

I love sedans, but this is one area where you can see the benefit of a hatch opening, particularly if you were frequently doing the airport run.

BMW has persevered with its twin-screen, minimal-button approach for its 'Operating System 8.5' in the M5. 

The 14.9-inch central touchscreen is bright, responsive and high resolution but the software remains a little strange. The main interface is classy but when looking for settings to adjust you’re presented with a Windows 95-esque panel of small square touch targets. It’s not intuitive. 

Wirelessly mirroring Apple CarPlay or Android Auto works a treat, at least. Digital climate controls keep temp adjustment persistently on screen and a shortcut to fan speed. The nipple-like vent direction adjustment grows on you, as do the digital vent sliders. 

The 12.3-inch digital driver’s display still doesn’t have the freedom of customisation and clarity of Audi’s interface. 

The M5 has two cupholders, a deep central storage cubby, door bins that swallow two 600mL plastic bottles and twin wireless charging pad that resolutely grips smartphones even under the sort of tummy-churning G-Forces this M5 can manage. 

Setting the M5 apart from the regular sedan is a unique centre console bunching 'M Drive' modes, 'M Hybrid' modes and other shortcut functions together next to the gear toggle and M-engraved crystal 'iDrive' controller.

Comfortable front seats are power adjustable with in/out, up/down lumbar support and have two memory positions. 

The 5096mm long M5’s back seat is very spacious. Headroom is good for those beyond 182cm (six-foot), the bench is extremely supportive, while leg and toe room are adequate.

A fold-down centre armrest has two cupholders and there are USB-C charge ports in the back of each bucket seat for a total of four. 

You can buy an accessory mount that holds tablets or smartphones for rear seat passenger entertainment, too.

When you look in the boot, BMW offering a Touring version of the latest M5 makes even more sense. The load aperture is big but the usable space is narrow; the sides intrude on load space. 

The 466-litre space will make fitting suitcases for an airport run tricky and, even with the 40/60 split-fold rear bench, you will struggle to fit a bike in the back. There’s no spare tyre, either.

The last M5 was well equipped but the new car is wanting for nothing. Australian cars have just about every option for $259,900, before on-road costs.

Australian M5s wear staggered 20-inch front and 21-inch rear alloy wheels paired with standard metallic paint, 'M Carbon Exterior' package (including carbon roof and rear lip spoiler), adaptive LED headlights and BMW’s 'Iconic Glow' illuminated kidney grille surrounds. 

Keyless entry, a heated steering wheel, heated and ventilated front seats, interior camera, powerful 18-speaker Bowers & Wilkins sound system, M seatbelts, four-zone climate control and a power tailgate are the cabin highlights. 

Optional extras are thin on the ground; you can choose from (eight) no-cost paint colours and all manner of 'Individual' shades (from $4100), four interior trims including classy 'Dark Oak' wood and four leather colours. There’s classic black ‘Merino’ leather, or you can have it dyed with a mix of 'Silverstone', red or 'Kyalami Orange'. 

Aside from that, the only major option is carbon ceramic brakes at a staggering $18,500, and an M5 Touring wagon costs $263,900. 

Though the M5 is more expensive than Audi’s closest rival, the RS6, the gulf isn’t huge considering you get a lot more punch in the BMW. Mercedes-AMG does not have an E-Class answer, yet.

Good value, then? Well, an equally potent Porsche Panamera is twice the price. So yes, in a sense.

The LS500 packs a 3.4-litre twin-turbocharged V6 petrol engine with impressive peak outputs of 310kW/600Nm.

This engine is designed to replace a V8 in terms of its power and feel, and in a lot of ways it does.

It might surprise you to learn the only other place you’ll see this engine used in Australia is the Toyota LandCruiser 300 Series.

The alternative present in the LS500h is a hybrid version of the same engine, sans the turbos.

With its electric assistance, power outputs are lower than this turbo version, but get close with a combined total of 264kW.

While I like the walloping nature of the turbocharged V6 we drove, I think the hybrid is a no-brainer choice for reasons explained in the driving segment.

Unlike the Mercedes-AMG C63, BMW has kept the M5’s eight-cylinder heart and this has proven to be a good decision. 

The 4.4-litre twin-turbo petrol engine has been optimised with “a cross-bank exhaust manifold and optimised oil separation”, says BMW.

The V8 spins to 7200rpm though it isn't a screamer, outputting a full-bodied 430kW (5600-6500rpm) and 750Nm (1800-5400rpm).

Augmented with a transmission-mounted 145kW electric motor that can produce up to 450Nm, thanks to pre-gearing, maximum combined outputs are 535kW and 1000Nm. 

Weight blunts punch, though, so despite nearly 100kW and 250Nm more, the new M5 is a tenth slower to 100km/h than its predecessor (claimed), at 3.5 seconds for the sprint.

You can thank a 220kW/tonne power-to-weight ratio, worse than the old car's 233kW/tonne figure. The new G90 claws some time back with brute force, hitting 200km/h in just 10.9 seconds and goes on to a limited top speed of 305km/h.

You can choose from five powertrain settings, starting with 'Electric' and 'Hybrid' for everyday use, while 'eControl' lets you store battery power for urban use.

'Dynamic' provides the best balance, says BMW, while 'Dynamic Plus' is like a qualifying mode. Think maximum combined punch for up to 10 minutes, at which point you’ll have drained the battery. 

Driving in pure electric mode, the take-off can be a little jerky but the quietude and decent power make it pleasant. Power sources are combined expertly in Hybrid and giving it some stick in Dynamic is more than enough to make your passengers feel queasy.

Given the angry sounds emanating from under the bonnet of this LS every time I put my foot on the accelerator, I was surprised to find overall fuel consumption for the week was surprisingly good.

I used the LS to drive mostly around town, and yet it beat its own urban claim of 14.2L/100km, settling at 12.9L.100km, closer to the combined fuel figure of 10L/100km.

The hybrid is said to nearly halve this consumption, and I’m inclined to believe it based on previous experience with Toyota/Lexus hybrid systems. 

The LS500 requires at least 95RON unleaded fuel and has an 82-litre fuel tank. That means you're looking at a range of around 635km, using our real-world figure.

Electric-only range is rated up to 69km in WLTP testing, but the 18.6kWh battery is more likely to give you around 60km in real-world driving. It can be topped up in about two hours using an 11kW AC charger, or overnight on a three-pin socket. 

BMW includes both Mode 3 (public) and Mode 2 (home) charging cables with the M5. 

The M5 uses 3.2L/100km of 98 RON premium unleaded in ADR testing, corresponding to just 72g/km of CO2, so it should sail through the first rounds of Australian emissions regulations. 

Indulging in what the V8 has to offer sees that consumption spike, though. An enthusiastic road drive saw the M5 gulp 12.4L/100km, according to the trip computer.

For a seemingly very sophisticated car, there’s something decidedly unsophisticated about the way the LS500 feels from behind the wheel.

Immediately, it feels nowhere near as cutting edge or even as special as something like the LC500, which to me becomes the truest expression of everything Lexus.

No, the LS500 in this turbo V6 guise feels a little bit too old-fashioned. It’s quiet and under acceleration feels like a V8 of just a few years ago, but the Aisin-sourced traditional torque converter automatic transmission is, dare I say, ordinary, lacking the finesse of its German rivals. It’s a problem which is easily solved. Pick the hybrid.

Elsewhere the experience is decidedly Lexus. If you’ve driven even an IS the experience is very familiar in the LS. The touchpoints all match, the steering is light and smooth with a healthy serve of electrical assistance, and, for the most part, the ride is as floaty and comfortable as you’d expect.

I say ‘for the most part’ because there are limits to what the LS’s adjustable-height air suspension will filter out on the enormous 20-inch wheels, complete with run-flat tyres.

Small bumps and potholes are dispatched with ease. Anything too large which passes a certain thud-factor will definitely be communicated to the cabin, though, making for a strange all-or-nothing ride quality.

It is impeccably silent inside, though. The engine is distant, even under load, and tyre noise is virtually non-existent thanks to specially designed alloy wheels with hollow chambers designed to minimise this effect. Now that’s more like what I expect from a Lexus.

It handles very well for such a big unit, making it at least decent to drive for the few buyers who will actually take the helm themselves.

This is no land yacht, it’s a surprisingly agile and adept machine when faced with a bit of blacktop. And it's here where the turbocharged V6 comes into its own compared to the hybrid, offering superior driver engagement.

The three M5 elements start with daily usability. We trundled out of Bathurst in electric mode, with the adaptive dampers (and other myriad settings) in Comfort. 

The M5 has steel springs, double wishbone front suspension and a five-link rear axle, all of which has been heavily reworked by the boffins at M. Naturally, the ride is firm, though in Comfort the body moves through its motions smoothly. 

The M5 is an effortless tourer, its eight-speed automatic shmoozing through ratios as it climbs and descends steep gradients. Wind and tyre noise insulation is good on coarse chip tarmac, though a bit more burble from the V8 would be appreciated. 

The M5 has nine adjustable parameters to wake it up: 'Drivetrain', 'Energy Recovery', 'Drivelogic' (gear shift aggression), 'Chassis', 'Steering', 'Brake', 'M xDrive', stability control settings and 'M Sound'. Favourite settings can be stored to the wheel-mounted M1 and M2 buttons. 

With the dampers still in Comfort the M5 remains fantastically capable with power delivery from the xDrive mighty rewarding on corner exit. Sport dampers sharpen the experience up further, amplifying the M5’s surprising agility. Thank the rear-wheel steer for this big sedan’s switchback performance. 

Step beyond the limit of grip, brake too late, or get on the power too early, though, and the M5’s mass reveals itself rapidly. It doesn’t help that the accurate steering is devoid of feel. The brake-by-wire pedal is too numb and light, as well, making it tricky to judge grip levels on the road.

Feel is less of an issue on a dry Mount Panorama circuit, where the M5 turns out to be a total pussycat. The all-wheel drive, consistent dynamics, strong brakes and well-tuned stability control make for an approachable but seriously fast sedan.

The responsive transmission will hold gears to redline and is eager on the downshift in its most aggressive setting while tactile shift paddles make commanding ratio changes yourself that bit more engaging. 

Prodigious punch out of corners is matched by the impressive consistency of the carbon ceramic brakes. The M5 pulled up for The Chase every time with minimal fuss, even from above 250km/h.

Similar credit goes to the 285mm front and 295mm rear Hankook S1 Evo tyres which remained consistent and predictable all day despite reaching temperatures over 130 degrees, according to the tyre pressure monitor.

The regular BMW 5 Series range scored a maximum five stars in 2023 ANCAP safety testing but this does not apply to the M5.

The M5 features nine airbags and a host of active safety systems, including auto emergency braking (AEB), blind-spot monitoring, rear cross-traffic alert, lane-keep assist, auto parking and speed limit assist. 

Lane-keep can easily be turned off via two taps but the other systems require more menu navigation, though are mostly unintrusive. A 'Track' mode disables lane-keep, AEB and other systems along with switching the central display off. 

Lexus offers a five-year and unlimited kilometre warranty, and LX buyers get three years of complimentary membership to the brand’s ‘Encore Platinum’ owner experience, which includes three years of capped price servicing, free loan cars at the time of service, invites to events, discounts on fuel at Ampol outlets, and four uses of ‘Lexus On Demand’ which lets owners swap into another Lexus model for up to eight days at a time, as well as eight free uses of valet parking at certain locations.

Servicing on the LS occurs once every 12 months or 15,000km and is fixed for the first three years at $595. Very cheap for the space it plays in.

In Australia, BMW has moved to match other manufacturers in offering a five-year/unlimited kilometre warranty on all its cars. 

Servicing is recommended on a condition basis, with the M5’s multimedia system prompting a visit to the mechanics. BMW offers pre-paid service packs for five years/80,000km at a price of $5059 for the basic offer and $8152 for 'Inclusive Plus', which covers brake pad and rotor replacements. 

It is expensive next to a regular 5 Series but when you consider the purchase price and performance level, the M5’s service pricing is not astronomical.