In-depth reviews

Mercedes E-Class review - MPG, CO2 and running costs

New 2.0 diesel improves CO2 emissions to class-leading levels

Not only is the 2.0-litre diesel in the E 220 d faster and more refined, it’s also more efficient. Combined fuel economy is 53.3mpg under the new WLTP regime. Also, on the SE model’s standard 17-inch wheels, CO2 emissions are now 141g/km. This is almost identical to rivals such as the Audi A6 Ultra S tronic, BMW 520d SE auto and Jaguar XF 2.0d auto.

Opt for the E 400 d and the vital figures aren’t quite as impressive, with a claimed maximum of 42.8mpg and 190g/km CO2, but this is still fairly competitive efficiency compared to its rivals and good considering the level of performance on offer. However, you'll be spending even more time at the filling station if you choose the petrol E 450 4MATIC - its 3.0-litre six-cylinder unit returns just 31.7mpg on the combined cycle.

The E 53 AMG manages 31.4mpg and 213g/km of CO2, which again is impressive for such a powerful motor - but in the real world those figures will be some way off, especially if you're driving it as intended.

The E 300 e and E 300 de are the most efficient of the bunch, emitting between 34 and 42g/km of CO2, and remember that if you can make use of its 30-mile electric range then you won't use a single drop of fuel. 

All cars get stop-start to help reduce tailpipe emissions, while other features such as clever aerodynamics further improve efficiency. The new E-Class has a drag coefficient of 0.23 Cd, which is actually 0.01 lower than the latest Toyota Prius, an already very aerodynamically advanced vehicle, showing how well the Merc slips through the air, using less fuel in the process.

Private buyers will have to do their sums carefully to avoid paying too much road tax, with only the entry-level E 220 d model coming in under the £40,000 road tax threshold.

Insurance groups

The entry-level E 220 d SE is rated at group 31, while the petrol E 200 AMG Line Edition sits in group 33. The top-of-the-range E 63 S will predictably incur expensive premiums being in group 47.

Insurance groups for the E 300 e and E 300 de are also higher because of the expensive hybrid tech and the potential for increased repair costs following an accident. In SE trim, they sit in groups 41 and 43 respectively.

Depreciation

With predicted residual values hovering around 41% according to our experts, the new E-Class is on a par with rivals when it comes to depreciation. The plug-in hybrid models fare a little better than the rest of the range, holding onto 44% of their original list price over 3 years and 36,000 miles.

Which Is Best

Cheapest

  • Name
    E220d SE 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £37,545

Most Economical

  • Name
    E300e AMG Line Edition 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £45,435

Fastest

  • Name
    E400d 4Matic AMG Line Premium 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £54,940

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