Mercedes-BenzS-class (2013-2021)

Used only
Large
Petrol/Diesel/Mild hybrid

£22,382Typical price

Test score

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The S-class is the flagship of the Mercedes-Benz range, debuting new safety features and technology that will eventually find their way into other modern cars. So how much does this generation S-class, on sale between 2013-2021, bring to the table? Find out in our full Mercedes S-Class review.

pros

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cons

What's included?

What is it?
What's it great at?
What's it like to drive?
How reliable is it?
How comfortable 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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KEY TEST RESULTS
Comfort and practicality
Brand reliability 0-4 years

Jan 2023Last checked by Which?
Oct 2013First reviewed by Which?
Oct 2013Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test cars

21 Mar 2023

Ease of driving

Overall
Visibility
Smoothness of power delivery
Driving stability
Cabin layout

How we test ease of driving

To find out how easy a car is to drive, we assess cars across a number of areas from visibility and handling to the layout of the cabin and how smoothly the engine delivers its power.

Performance

Overall
In-gear acceleration
Brakes

How we test performance

We test braking distances and whether the effectivess of the brakes fade with repeat use. Performanc is based on in-gear acceleration.

Comfort and practicality

Overall
Entry and exit
Seat comfort
Ride quality
Quietness
Seat space
Boot space (large cars, SUVs and MPVs)

How we test comfort and practicality

Comfort and practicality includes how easy it is, or not, to get in and out of the car and the maximum height of occupants. We also measure road, wind and engine noise and assess how well the car deals with bumps from large potholes to jittery surfaces like cobble stones.

Which? safety

Brand reliability 0-4 years

Overall
Electric car reliability
Plug-in hybrid reliability
Petrol reliability
Diesel reliability

How we test brand reliability 0-4 years

Our reliability ratings are based on the feedback from tens of thousands of UK motorists, as collected in our annual Which? car survey. We divide all reliability feedback into three age groups: cars aged up to four years, five to nine years, and 10 to 15 years.

Brand reliability 5-9 years

Overall
Diesel reliability

Brand reliability 10-15 years

Overall
Petrol reliability
Diesel reliability

General
Class	Large
Luxury	Yes
Convertible	No
Availability	Used only
Used price	£22,382 - £82,787
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	45.6 to 46.3mpg
Length	5,116 to 5,125mm
Width (excluding wing mirrors)	1,899mm
Width (including wing mirrors)	2,135 to 2,140mm
Height	1,496mm
Driver max height
Second row passenger max height
Boot space with seats up	405 to 440 litres
Boot space with seats down	405 to 440 litres
Folding rear seats	No
Isofix attachments	Yes
Turning circle	11.9 m
On sale date	01 October 2013

Latest tested engine
Engine name	S400d 9G-Tronic
Fuel type	Diesel
Capacity and power	2.9-litre (340hp)
Transmission	9-speed automatic
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	70 litres
Tested fuel economy: City / Out of town / Motorway (mpg)
Tested fuel economy: Combined (mpg)
Cost per mile	16.7p per mile
Cost of filling tank	£119
Monthly fuel cost
Annual fuel cost
NOx level	Very low
CO level	Very low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	161
Well-to-wheel (WTW) CO2 (g/km)	193
Official fuel economy: NEDC	48.7
Official Euro emission level	Euro 6c
Braked tow load (KG)	2100kg
Unbraked tow load (KG)	750kg
Engine test date	26 January 2018
Test programme	2017

Engine two
Engine name	S350 BlueTEC 7G-TRONIC PLUS
Fuel	Diesel
Capacity and power	3-litre (258hp)
Transmission	7-speed automatic
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	70 litres
Tested fuel economy: City / Out of town / Motorway
Tested fuel economy: combined mpg
Cost per mile	17p per mile
Cost of filling tank	£119
Monthly fuel cost
Annual fuel cost
NOx level	Medium
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	164
Well-to-wheel (WTW) CO2 (g/km)	199
Official Euro emission level	Euro 6b
Braked tow load (KG)	2100kg
Unbraked tow load (KG)	750kg
Engine test date	09 December 2013
Car test programme	2012-2016

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Mercedes-BenzS-class (2013-2021)

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pros

cons

What's included?

How we test cars

Ease of driving

Performance

Comfort and practicality

Which? safety

Brand reliability 0-4 years

Brand reliability 5-9 years

Brand reliability 10-15 years

How this product's score compares with other new and used cars we've tested

Suggested Alternatives

BMW

Kia

Volkswagen

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Mercedes-BenzS-class (2013-2021)

pros

cons

What's included?

Test results

Specifications

Best Buys & Don't Buys

Suggested Alternatives

BMW

Kia

Volkswagen

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