Fault File
All models / All cars / Saloons & estates / Mercedes E-Class

Mercedes E-Class

All generations and engines together · 199,865 MOT tests in the 2025 data · typical mileage at age 7: 87k

First-time failure at age 7
16.5%
Across 20,696 tests. The average across all tracked models is 19.5%.
Rank at age 7
86 of 239
1 = lowest failure rate among the models tracked.
Typical mileage at age 7
87k miles
Check the mileage view below; low-mileage models can look better by age than they are.

Generation

Split by first-registration year. Cars registered in a changeover year can belong to either generation.

How this model wears

Mercedes E-ClassClass average, all tracked models

Known issues

Measured

Computed from DVSA MOT results, all of Great Britain, 2025. Nothing here is opinion.

What testers flag

Share of tests where each item was recorded. The dark tick is the class average across all tracked models; bars are scaled within each group.

Faults with the car itself

The rows that judge the model rather than its keeper. 83,108 tests in this band.

A suspension pin, bush or joint excessively worn
Advisory
7.3%class 6.7%
A suspension pin, bush or joint excessively worn
Fail
2.5%class 0.7%
Engine MIL illuminated indicating a malfunction
Fail
2.3%class 0.9%
A wheel bearing with excessive play
Advisory
1.9%class 0.5%
Any fracture or welding defect on a wheel
Fail
1.3%class 0.1%
A wheel badly distorted or wear between wheel and hub at spigot mounting
Advisory
1.1%class 0.6%
A spring or spring component fractured or seriously weakened
Fail
1.0%class 1.4%
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
Advisory
0.8%class 2.3%
A suspension joint dust cover severely deteriorated
Minor
0.8%class 1.0%

Wear, upkeep and luck

Tyres, pads and stone chips say more about how the car was driven and maintained than about how it was built.

Tyre tread depth not in accordance with the requirements
Advisory
27.7%class 22.9%
A brake lining or pad worn below 1.5mm
Advisory
8.8%class 8.7%
Brake disc or drum excessively weakened, insecure or fractured
Advisory
8.2%class 10.1%
A tyre seriously damaged
Advisory
8.1%class 13.4%
Brake disc or drum significantly and obviously worn
Advisory
5.9%class 3.4%
Tyre tread depth not in accordance with the requirements
Fail
3.2%class 2.2%
A tyre seriously damaged
Fail
2.9%class 2.0%
A tyre cords visible or damaged
Fail
2.6%class 1.2%

Unconfirmed issues

Reported

Owner folklore from forums and the motoring press. Most of it never shows up in an MOT, which is why this section exists at all.

Front brake discs and pads wearing out early

Partly in the MOT data

Brakes are the measured MOT signature fault for this model, and owner reports back that up from a different angle: front discs and pads going through well before the mileage a heavy executive car should manage. Honest John's Ask HJ column has logged cars needing new front discs from as little as 12,500 miles, with a front disc-and-pad job running around £300 and closer to £650-700 for all four corners. It turns up on both W212 and W213 cars, with W213 owners also describing judder and vibration through the pedal. Put it down to the car's kerb weight and standard-fit discs rather than one single design flaw.

Reported from 12,500 miles upward · sources: Honest John, WhoCanFixMyCar, vinnolookup

Timing chain tensioner and balance shaft wear on early W212 engines

Emerging

Owners of 2009-2012 W212 cars, on both the CDI diesel and CGI petrol engines, have reported timing chain tensioner failures and balance shaft wear even on fully serviced examples, sometimes ending in a full engine rebuild or replacement. Honest John logged a 2010 E200 CDI failing at 89,000 miles, with Mercedes covering 75% of a £4,153 bill, and a 2010 E200 CGI estate quoted £11,000 for a full engine swap at a similar mileage. There's no public recall, but the pattern of goodwill payouts suggests Mercedes knows these parts run marginal, especially on cars that have had extended service intervals rather than being serviced on time.

Reported 80-100k miles, mostly 2009-2012 cars · sources: Honest John, WhoCanFixMyCar

AIRMATIC air suspension leaks and failures

Emerging

The self-levelling air suspension fitted to most E-Class saloons and estates is a well-known weak point across W211, W212 and W213 cars. Rubber air springs crack and leak, height sensors clog or their linkage snaps, and the compressor or valve block burns out from cycling too often, leaving the car sitting low or bouncing, most noticeable after it's been parked overnight in the cold. A single new air spring runs from around £650 fitted, more if the compressor or control unit goes too. It's simply treated as a wear item that fails earlier than buyers expect, not something Mercedes has ever recalled for.

Reported from 60k miles, worse with age · sources: Honest John, PistonHeads, WhoCanFixMyCar, vinnolookup

CDI injector and NOx sensor problems

Diesel only

Diesel E-Class models, particularly OM651-engined CDI cars, have a history of piezo injector failures bringing on rough running and warning lights, with some owners needing replacements within a few years of what looked like a healthy car. Later OM654-engined W213 diesels get NOx sensor failures instead, caused by exhaust heat, which trip the emissions light and can push the car towards limp mode if left. Petrol E-Class models are not affected by either issue.

Diesel-specific, reported across ages · sources: Honest John, vinnolookup, WhoCanFixMyCar

Electrical gremlins: parking sensors, aux battery, infotainment freezes

Emerging

A grab-bag of electrical niggles turns up repeatedly across generations: parking sensors that work intermittently or not at all, an auxiliary 12V battery that fails or drains even on newer, low-mileage W213 cars, and an infotainment system (COMAND or MBUX) that freezes or reboots itself, usually cleared by a software update or a full reset at a garage. None of it tends to be dangerous, but it chips away at confidence in an otherwise well-built car and isn't always cheap to chase down.

Reported across all ages · sources: Honest John, vinnolookup, WhoCanFixMyCar

Wiring harness and fire-risk recalls

Confirmed pattern

Mercedes has issued genuine recalls covering wiring faults on the E-Class. W212 cars built between July 2013 and December 2014 were recalled over a wiring defect linked to a fire risk, and W213 cars have had four separate recalls between 2022 and 2024 for the wiring harness not being properly secured to the body, affecting roughly 3,500 UK cars. Both are free dealer fixes, but only if the work has actually been carried out, and plenty of cars on the used market still haven't had it done.

Manufacturer-acknowledged recalls · sources: Honest John, mercedesassistance.com

Viewing one? Ask this

Built from the two sections above.

Pull the MOT history and look for repeat brake advisories or fails. The same brake advisory two years running means discs are being run down to the wire, not replaced properly.
Check front disc thickness and feel for pedal judder on the test drive. Scoring, lip on the disc edge, or vibration under braking means a replacement is due sooner than the seller's asking price suggests.
On a diesel or petrol W212 (2009-2012), listen for a rattle on cold start before the oil pressure builds. A persistent rattle points at timing chain tensioner wear, which can end in a rebuilt or replaced engine.
Push down on each corner and watch how the car settles, then check it again after it's sat overnight. Sagging on one corner or a slow settle points at a leaking air spring or a tired AIRMATIC compressor.
Run the VIN through Mercedes' recall checker before you buy. An open wiring-harness recall is a free fix, but only if it's booked in, don't assume a private seller has done it.
On diesel cars, watch for rough idling or an emissions warning light after a longer run. Could be an early sign of injector wear or a failing NOx sensor, both expensive to sort out of warranty.
Poke around the infotainment screen and parking sensors during the test drive. Freezing screens or sensors that drop out intermittently are a known niggle, not a dealbreaker but worth a price chip.

Others in its class

Same segment (Saloons & estates), best MOT record first. Compare before you shortlist.

How it compares

Head to head with the other popular cars in its class on reliability and common faults.