In-depth reviews

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

The Mercedes E-Class plug-in hybrid model makes greats sense for business users

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 53.2mpg under WLTP testing. Also, on the Sport model’s standard 17-inch wheels, CO2 emissions are now 139g/km.

Opt for the E 400 d and the vital figures aren’t quite as impressive, with a claimed maximum of 42.2mpg and CO2 emissions of 176g/km, 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 31.4mpg on the combined cycle.

The E 53 AMG manages 30.4mpg and 208g/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 33 and 36g/km of CO2, and remember that if you can make use of the 30-mile plus 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 200 model coming in under the £40,000 road tax threshold.

Insurance groups

The entry-level E 200 Sport is rated at group 34, while AMG Line trim takes this up to group 36 for both the petrol and E 220 d diesel versions. The top-of-the-range E 63 S will predictably incur expensive premiums being in group 49. The popular 

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 AMG Line trim, they sit in groups 44 and 46 respectively.

Depreciation

With predicted residual values hovering around 49% 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 50-54% of their original list price over 3-years and 36,000 miles.

Next Steps

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 Night Ed Prem+ 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £58,540

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