BMW M5 saloon
Price £73,970 - £91,900
- Incredible performance
- Fast and comfortable
- Luxurious interior
- Pricey to buy
- Expensive to run
- Poor mpg and high emissions
At a glance
"The BMW M5 handles incredibly well and is shockingly fast, but there’s no getting around that monstrous price tag."
A turbocharged V8 petrol engine gives the BMW M5 an enormous 552bhp, while clever electronically controlled suspension allows you to tweak its behaviour for a more comfortable ride or sharper handling as the your mood (and the road) dictates.
It's a big four-saloon with a generous boot, but there's no mistaking the fact that the M5 is all about the driver. Almost everything about the experience is spot-on: from the the beautifully weighted steering to the super-fast automatic gearbox. Yet this car retains all the best traits of the standard BMW 5 Series saloon, including a stylish and well made interior, that big boot and impeccable road manners when you’re taking it easy.
Optional extras to push the already-stiff list price to dizzying heights include sports leather seats, a head-up display and a larger 10.2-inch screen for the sat-nav systems. Those lucky enough to be in the market for a brand-new M5 will probably also be considering the Mercedes E63 AMG, Jaguar XFR-S, Audi RS6 Avant or Audi RS7 Sportback.
MPG, running costs & CO2
Strong used values won't offset sky-high running costs
Speed is a thirsty mistress, and the M5 drinks fuel at a ferocious rate, with average fuel economy of 28.5mpg and CO2 emissions of 232g/km resulting in an annual road tax bill of £490. We found that number drops to around 15mpg if you drive the M5 aggressively, which most buyers are very likely to do. Although this M5 is 30% more efficent than the car it replaced, it's still hugely expensive to run.
Engines, drive & performance
The extremely fast M5 is a thrilling car to drive
Describing the M5 as 'fast' just doesn't do it justice. The car produces 552bhp from a 4.4-litre twin-turbocharged V8 petrol engine, which means accelerating from 0-62mph takes just 4.4 seconds. Plus, the optional Tuning package increases the car's top speed from 155 to 190mph. You can electronically tune virtually every aspect of how it drives to suit you, from how responsive the steering is to how quickly it changes gear.
Yet whatever set-up you favour, the M5 is always thrilling to drive. Acceleration is breath-taking, even if you put your foot down in third or fourth gear. Thankfully, there's also plenty of grip to keep you pointing in the right direction.
Interior & comfort
The M5's clever suspension means it's as comfortable as any rival on rough roads
Using the various electronic controls on offer, you can make the M5 surprisingly comfortable given its performance focus. Turn the suspension to its softest setting and the car will smooth out most of the bumps in the road just as effectively as a regular 5 Series does. The engine is quiet at cruising speeds, while wind and tyre noise are kept at bay by thick double-glazed windows. Everything is relative, though, so don't expect the height of comfort – this is still a sports saloon first and foremost.
Practicality & boot space
Incredible performance combined with decent practicality
The M5 is still a BMW 5 Series, so it's spacious on the inside and the 520-litre boot capacity isn't bad at all. You also get a large glovebox and deep door bins. Ultimately, the M5 gives you all the trimmings of the class-leading executive saloon, but with the extra kick of genuinely heart-pounding performance.
Reliability & safety
The M5 feels just as well built as the standard 5 Series
BMW had a mid-table result in our 2015 Driver Power owner-satisfaction survey, coming 14th out of 32 brands in the UK, partly thanks to a seventh-place rating for build. That's good news, as the M5 is likely to be bought by people who are going to wring every last drop of performance out of it and therefore needs to be very robust. The standard 5 Series saloon ranked an impressive 47th out of the UK's top 100 cars, which indicates owners are generally pretty happy with its durability.
The 5 Series is also a very safe car and the M5 shares its maximum five-star Euro NCAP crash-test rating. Electronic stability control, a full complement of airbags and rear parking sensors are all fitted as standard.
Price, value for money & options
Very expensive, but exclusivity is guaranteed
You'd better want the M5's performance pretty badly, because you really pay for it. But you're paying for exclusivity, too, as the M5 is a rare sight on UK roads – not to mention all the driver-focused accessories and technology that make the M5 so thrilling. Plus, it's well equipped with standard leather sports seats, climate control, keyless entry and 19-inch alloy wheels.
So you won't be short-changed on kit – but you will need deep pockets to both buy and run the M5. The good news is that the car's excellent resale values on the used market go some way towards making up for this. The used-car experts at CAP reckon it'll retain 51% of its purchase price after three years or 36,000 miles of ownership.