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BMW M4 review - MPG, CO2 and Running Costs

Given the astounding performance of the M4, it provides decent on-paper efficiency. However, use its 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 Coupe returns up to 27.7mpg with the manual gearbox, while the DCT auto has marginally better claimed economy of up to 28.5mpg.

CO2 emissions are 227g/km for the manual and 213g/km for the DCT auto model. The Convertible is ever-so-slightly less efficient, while choosing the racier Competition Package does nothing to affect running costs. The range-topping M4 GTS will allegedly do 34mpg, although that is under the older NEDC test procedure.

Insurance groups

The BMW M4 is a high-value, high-performance car that attracts an unsurprisingly high insurance grouping of 42. 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.

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The M4 Competition Pack's increased power and go-faster visual additions mean it is a little dearer to insure, in group 43, while the CS will be higher still.

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 slighlty 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.

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Which Is Best

Cheapest

  • Name
    M4 Competition 2dr DCT
  • Gearbox type
    Semi-auto
  • Price
    £65,225

Most Economical

  • Name
    M4 Competition 2dr DCT
  • Gearbox type
    Semi-auto
  • Price
    £65,225

Fastest

  • Name
    M4 Competition 2dr DCT
  • Gearbox type
    Semi-auto
  • Price
    £65,225
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