Parkers overall rating: 3.8 out of 5 3.8

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 3.1 - 4.7 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Fuel economy

Petrol engines 18.6 - 27.7 mpg
  • Not a cheap car to run
  • Performance models worse still
  • You get great enjoyment, though

The Mercedes-Benz S-Class Coupe sits in insurance group 50A and emits a significant amount of CO2 so this isn’t going to be a cheap car to run.

The S 500’s claimed fuel economy is 33.2mpg (though we saw just 18mpg during our time with the car). Fortunately,  it does sport a relatively large fuel tank of 80 litres with a further eight in reserve; if you manage to get close to Mercedes’ figures you can expect a range of over 600 miles per fill-up.

However, the S 63’s figure is a lowly 28.0mpg and the S 65 is 23.7mpg on average, but we did manage 21mpg in the latter on a long drive back from Germany without trying.

The rate of depreciation of the S-Class Coupe is inversely proportional to the cost of the car, meaning S 500 fares best and S 65 loses a terrific amount of money rather quickly.

The CO2 emissions the Mercedes-Benz S-Class Coupe produces range from 197g/km for an S 500 Coupe with the smallest 19-inch alloys to 279g/km for an S 65 on 20-inchers.

  • Company’s reputation improved…
  • …but there’s a lot to go wrong

While Mercedes-Benz reliability in general has improved markedly over recent years, there’s no escaping the sheer amount to go wrong on the S-Class Coupe.

But with that said, the only major recalls so far for the whole S-Class range have been to do with the stop/start system. Considering how many cars the firm has sold, that’s not bad going at all.

Ongoing running costs

Road tax (12 months) £315 - £600
See tax rates for all versions
Insurance group 50
How much is it to insure?