In-depth reviews

Mercedes S-Class saloon - Reliability & safety

The Mercedes S-Class boasts some of the world's most advanced safety features

Carbuyer Rating

4.5 out of 5

Owners Rating

4.0 out of 5

Read owner reviews
Reliability & safety Rating

4.0 out of 5

The outgoing S-Class sold in too small numbers to feature in our Driver Power survey, but the Mercedes brand only managed to come in 28th place out of 30 manufacturers in 2020.

Mercedes S-Class reliability

Coming 28th out of 30 manufacturers in 2020 is certainly a disappointing result, with high running costs and expensive maintenance dragged down Mercedes’ score. There are plenty of systems fitted to the S-Class with the potential to malfunction, but for the first time in the model, over-the-air updates should make it possible for software patches to be installed without having to visit the dealership.

Safety

There are plenty of reasons to argue the S-Class could be the safest car available to buy. It's absolutely bristling with advanced safety equipment, including eight standard airbags, traffic-sign recognition, driver monitoring and systems that help the chassis deal with corners and crosswinds. The car can also raise by up to 80mm if a side-impact is imminent, helping better protect occupants. 

A Driving Assistance Package is now standard, with features including blind-spot monitoring, lane change assist and evasive steering assist. It also has adaptive brake lights and attention assist to ensure the driver isn't tired or distracted. An emergency call system can alert the emergency services automatically if the car is involved in a serious collision.

Next Steps

Which Is Best?

Cheapest

  • Name
    S350d Grand Edition 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £74,540

Most Economical

  • Name
    S580e L AMG Line Premium 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £103,695

Fastest

  • Name
    Maybach First Class S680 4Matic 4dr 9G-Tronic
  • Gearbox type
    Semi-auto
  • Price
    £201,335

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