Ford Mustang vs BMW M5

What's the difference?

Having driven the latest example of the Mustang GT, I hope Bill Ford is true to his word and keeps the V8-powered Mustang for as long as possible. It isn’t the most razor-sharp sports car or the most powerful muscle car, but it offers the kind of driving thrills and enjoyment that have made the car an icon.

The price increase is steep but the new technology inside drags the Mustang into the modern era and will add more youth appeal to a car that is largely unchanged in concept for the past 60 years.

But now that I’ve driven it in the USA and France, I can’t wait for it to finally reach Australia.

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

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.

While this is considered a ‘new generation’ Mustang, the reality is this is more of a major overhaul than a complete, blank sheet redesign. As such, there’s a lot of carry over to the design, but that’s not to say there aren’t some significant changes.

For example, it’s still clearly a Mustang in its silhouette, sharing that with the sixth-generation model it replaces, as well as the now-iconic 1960s Fastback models, but the details are noticeably different.

To try and create more differentiation between the GT and EcoBoost models, Ford has designed unique front ends for each. Both are characterised by a strong horizontal line across the front of the more angular grille that meets the new ‘tri-bar’ daytime running lights.

The EcoBoost has an upper grille similar in size to the out-going model, the GT is a much larger upper section which incorporates a pair of ‘nostrils’ as well as a bonnet vent - both of which are functional for cooling and aerodynamics.

Down the sides Ford has lowered the beltline and created a more defined rear fender ‘shoulder’ that helps create the impression of a wider car. 

At the rear the famous ‘tri-bar’ lights remain and there are unique diffusers for each model, with the EcoBoost running two exhaust tips and the GT getting quad pipes.

But it’s inside where the biggest design changes have happened. The retro-inspired cabin of the sixth-generation - which features shiny silver plastic toggle-like switches and round air-con vents - has been overhauled.

The iconic ‘double brow’ design to the dashboard, which dates back to the original 1964 Mustang, has been dropped and replaced with a pair of digital screens. There’s a 12.3-inch display for the digital instrument cluster and a 13.2-inch multimedia touchscreen.

This change is designed to appeal to a younger audience but also allows for greater customisation and variety of displays, with Ford developing six different instrument panel options depending on the setting the driver chooses.

The primary three are the 'Normal', 'Sport' and 'Track' modes, which have been inspired by the GT supercar and the Mustang Mach-E electric SUV, while there’s also a 'Calm' setting, providing only the necessary data, such as speed, in a simplified format.

The final two have been created to tailor to fans of the brand’s 1980s ‘Fox Body’ Mustang, with digital versions of its round analogue dials in both a ‘Day’ and ‘Night’ mode, with the former using white graphics and the latter getting retro green dials.

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.

The sixth-generation Mustang copped a lot of criticism for its interior look and feel, and while it certainly wasn’t at European levels of quality it was more affordable than any European V8-powered coupe.

The introduction of the new digital displays certainly adds a more premium impression to the cabin when you get inside, but you can still see a lot of the previous generation in this model, in particular the doors and centre console.

It’s pretty practical, for a sports car, with a pair of cupholders and a lidded centre console box for small item storage. 

One noticeable issue with the screens is the control virtually everything to do with the multimedia, including the air-conditioning, so trying to make small temperature adjustments is more complicated than just pressing a physical button. 

Not surprisingly space feels very similar to the outgoing Mustang with supportive and comfortable seating up front that made long stretches behind the wheel feel easy, which is nice for a sports car.

As for the rear seats, they remain incredibly tight for space and are better for soft item storage rather than squeezing people into.

Despite the largely carried over body and interior, the boot is slightly smaller than the previous model, with the coupe measuring 376 litres compared to the 408 litres offered previously. 

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.

During the top secret development of this seventh-generation model there were plenty of rumours that Ford was considering a hybrid system for this Mustang. Fortunately for lovers of old-school V8 engines that proved not to be the case.

Instead it’s powered by a 5.0-litre V8 that's an evolution of the ‘Coyote’ unit from the previous ‘Stang but now featuring some technical changes, including dual throttle-bodies and separate airboxes to help improve performance. In the GT it’s tuned to make 345kW and 550Nm.

It can be paired with either a six-speed manual gearbox or 10-speed automatic transmission, both sending all the power to the road via the rear wheels.

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.

While it hasn’t been confirmed by Ford, the Federal Government's Green Vehicle Guide has the Mustang GT rated at 12.8L/100km. And while that’s quite a thirst for unleaded petrol, it shouldn’t come as a surprise given it’s a 345kW 5.0-litre V8 engine.

If you value efficiency in your American muscle car, the four-cylinder turbocharged EcoBoost is rated at 9.4L/100km. But based on previous evidence, Mustang buyers are likely to opt for power over saving petrol.

The claimed consumption figure translates to a driving range between fills of around 650km.

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.

As promised earlier, here’s how the Mustang GT felt powering through the French countryside…

But first, it’s worth acknowledging that, in truth, it wasn't hard work getting through the traffic even in the manual Mustang. While the clutch is on the heavier side, it’s got a smooth action and the engine's torque and flexibility make darting in and out of gaps in the traffic a breeze.

However,  once out on the open roads the Mustang really could run free. The V8 engine sounded fantastic bellowing out across the fields and through the quaint little villages we passed through.

As you'd expect, the V8 provides plenty of grunt, it's an incredibly flexible engine pulling hard right across the rev range and makes us appreciate even more that this now remains the last of its kind since the demise of the V8-powered Chevrolet Camaro and Dodge Challenger.

Driving the Mustang in conditions like this makes you understand why it has been such a popular sports car not only in Australia but around the world for decades.

While the manual transmission has fallen out of favour with Aussie buyers, the truth is it's the pick for this GT. The fact it has less ratios to choose from than the 10-speed automatic means it feels more urgent and (again) the flexibility of the engine allows it to shine.

Not that the auto is bad, it does a fine job, it just lacks the buzz and engagement the manual ‘box provides.

What arguably impresses even more than the engine is the handling. Having driven the Dark Horse last year and being so impressed by its handling, particularly with the 'Performance Package', there was some concern prior to driving the GT that it would feel less impressive and, dare I say, duller.

But that's far from the case. Instead, the GT feels responsive and well sorted across a variety of road conditions. While it may lack the precise handling characteristics of a European sports car, it’s clear Ford has made this latest Mustang better suited for the rest of the world, not just America.

Not that Ford has made the Mustang too serious, as the introduction of the Drift Brake demonstrates. This rally-style electronic handbrake allows you to, as the name suggests, snap the car into a slide - when the circumstances allow.

Ford finally gave us our first (official) use of the Drift Brake when it paid us up with stunt driving expert, Paul Swift, who taught us how to slide the Mustang into a parallel park.

Obviously this is not designed for road use but for those who want to take their Mustang to the track it will no doubt lead to a lot of fun and some shredded tyres.

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. 

There are no details confirmed at this stage but there’s no reason to believe the Mustang won’t be covered by Ford Australia’s usual five-year/unlimited kilometre warranty.

Similarly, service intervals are likely to be 12 months/15,000km.

For reference, capped price servicing on the out-going Mustang GT came in at $299 for each of the first four services, up to four years/60,000km. Not bad.

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.