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Mercedes-Benz S-class Hybrid (2014-2018) review

£22,585 Price from

Test scoreShow Context

Key features
  • Large
  • Used only
  • Full hybrid
Expert review

On paper it looks almost too good to be true: a powerful luxury saloon with a fuel economy of more than 100mpg and CO2 of just 65g/km. At least, those are the claims for the Mercedes-Benz S500 Plug-In Hybrid, the petrol-electric hybrid version of the S-Class, launched in 2014. Are these claims borne out? Read our full road test review to find out.

What's included:
  • Pros and cons
  • What is it?
  • What's it great at?
  • What's it like to drive?
  • How reliable is it?
  • How comfortable and spacious is it?
  • How economical is it to run?
  • How safe is it?
  • Is there anything I should look out for?
  • Should I buy it?
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Last checked by Which?

December 2021

First reviewed by Which?

July 2017

Released

September 2014

Test results
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Best Buys and Don't Buys
We have tested 762 new and used cars and found that there are 43 Don't Buys and 158 Best Buys.
Range of New and used car scores
  1. 4%
    Lowest score
  2. 64%
    Average score
  3. 85%
    Highest score
We'll show you where this model sits on the scale so that you can see how it compares to new and used cars we've tested
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