BMW M4 (2014-20200 review - MPG, CO2 and running costs

Decent on-paper efficiency, but use the M4 Competition's full potential and you can expect mammoth fuel and tyre bills

Compared with the old M3 Coupe – which used a large naturally aspirated V8 – the M4 is actually quite fuel-efficient. The twin-turbocharged 3.0-litre six-cylinder unit is around 25 per cent more economical.

Under the latest WLTP test regime, the M4 Competition coupe returns up to 28.5mpg, while the convertible is slightly less efficient at 28.0mpg. CO2 emissions are 228g/km for the coupe and 232g/km for the drop-top. 

Insurance groups

The BMW M4 Competition is a high-value, high-performance car that attracts an unsurprisingly costly insurance grouping of 43. That said, insurance experts Thatcham gave the car a five star rating for its theft protection. All versions of the M4 get a Category 1 alarm and immobiliser, while deadlocks come as standard. However, there's no tracking device fitted, so we'd recommend forking out for an approved device for added security.

Depreciation

Strong demand has helped keep M4 residuals buoyant, although residuals have tailed off the longer the M4 has been on sale. Best of the coupe models is the standard six-speed manual, which should retain around 46 per cent of their value. Models equipped with the DCT twin-clutch automatics hold on to slightly less of their new value, but we're only talking a couple of percentage points. Across the board the Audi RS 5 Coupe has stronger residuals by around 10 per cent.

It's a similar picture for the Convertible models, with manual versions proving to be more resistant to depreciation. However, all the drop top models feature residual figures that are couple of percent high than their Coupe counterparts.

Get your hands on one of the GTS models and you're unlikely to lose a penny – despite costing twice the price of a standard M4. Like many limited-edition Porsche 911s, the M4 GTS is a winner through exclusivity alone.

Which Is Best

Cheapest

  • Name
    M4 Competition 2dr Step Auto
  • Gearbox type
    Semi-auto
  • Price
    £74,740

Most Economical

  • Name
    M4 Competition 2dr Step Auto
  • Gearbox type
    Semi-auto
  • Price
    £74,740

Fastest

  • Name
    M4 xDrive Competition M 2dr Step Auto [M Carbon]
  • Gearbox type
    Semi-auto
  • Price
    £83,690

Most Popular

What are 4D number plates and are they legal?
Ross Hollis at perfectlyprintedplates.com
Tips & advice

What are 4D number plates and are they legal?

Everything you need to know about so-called ‘4D’ number plates, including whether you’re allowed to have them on your car
25 Jan 2022
Best electric cars to buy 2022
Best electric cars
Electric cars

Best electric cars to buy 2022

There are more electric cars than ever to choose from, so we've picked some of the best you can buy in the UK now
10 Jan 2022
New 2022 Lamborghini Countach LPI 800-4 hits the road for the first time
Lamborghini Countach - front
Lamborghini Countach

New 2022 Lamborghini Countach LPI 800-4 hits the road for the first time

Lamborghini’s reborn Countach pictured on the move ahead of it arriving with customers
25 Jan 2022