MOT performance
Mercedes-Benz CLS MOT pass rate and common failures
Across 48,848 MOT tests of the Mercedes-Benz CLS in 2023–2024, 74.4% passed first time. Allowing for age, mileage and fuel, Mercedes-Benz CLSs failed 20% less often than comparable cars. The most common failure item was “condition: has ply or cords exposed”, on 3.24% of tests.
48,848 MOT tests on 25,126 vehicles, 2023–2024 · Source: DVSA (Open Government Licence) · Analysis: 73 Auto
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| Figure | Value | Basis |
|---|---|---|
| First-time pass rate | 74.4% | ±0.4 pts (95%), n = 48,848 |
| Failures vs similar cars | 0.80× | same age, mileage and fuel = 1.00 |
| Tests with a dangerous defect | 10.6% | n = 48,848 |
| Average age at test | 10.6 years | n = 48,848 |
| Median mileage at test | 84,398 miles | n = 48,848 |
| Vehicles tested | 25,126 | 2023–2024 |
Where Mercedes-Benz CLSs fail
The share of MOT tests that failed on each area, and how that compares with cars of the same age, mileage and fuel. Areas where the difference is large and clear link to their own page.
| Area | Tests failed on it | vs similar cars |
|---|---|---|
| Tyres | 10.0% | +41% |
| Suspension | 8.0% | -28% |
| Brakes | 6.3% | -22% |
| Lights, reflectors and electrical | 5.3% | -58% |
| Noise, emissions and leaks | 3.1% | -9% |
| Driver's view of the road | 2.1% | -58% |
| Road wheels | 1.6% | +233% |
| Steering | 1.2% | -50% |
| Body, chassis and structure | 1.0% | -77% |
| Registration plates and VIN | 0.5% | +22% |
| Seat belts and airbags | 0.4% | -68% |
Most common failure items
| Item | Area | Share of tests |
|---|---|---|
| Condition: has ply or cords exposed | Tyres | 3.24% |
| Coil spring: fractured or broken | Suspension | 3.09% |
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 2.65% |
| Rigid brake pipes: excessively corroded | Brakes | 2.38% |
| Ball joint: ball joint excessively worn | Suspension | 2.19% |
| Condition: has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 2.01% |
| Condition: has a bulge, caused by separation or partial failure of its structure | Tyres | 1.46% |
| Malfunction indicator lamp: inoperative or indicates a malfunction | Noise, emissions and leaks | 1.18% |
| Condition: fractured | Road wheels | 1.06% |
| Brake pads: less than 1.5 mm thick | Brakes | 1.01% |
Most common advisories
Advisories are items the tester expects to need attention soon; they don't fail the test.
| Item | Area | Share of tests |
|---|---|---|
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 17.33% |
| Rigid brake pipes: excessively corroded | Brakes | 12.54% |
| Brake pads: less than 1.5 mm thick | Brakes | 7.52% |
| Brake discs: in such a condition that it is seriously weakened | Brakes | 7.42% |
| Engine oil leaks: leaking excessively from engine | Noise, emissions and leaks | 5.03% |
Pass rate by age
| Age at test (years) | Tests | First-time pass rate | Failures vs similar cars |
|---|---|---|---|
| 3-4 | 2,717 | 82.3% | +19% |
| 5-6 | 5,279 | 82.0% | -3% |
| 7-8 | 9,268 | 80.5% | -21% |
| 9-10 | 9,557 | 75.5% | -22% |
| 11-12 | 5,570 | 73.7% | -28% |
| 13-15 | 7,769 | 65.7% | -18% |
| 16+ | 8,459 | 67.7% | -26% |
Pass rate by registration year
| Registered | Tests | First-time pass rate | Failures vs similar cars |
|---|---|---|---|
| 2020 | 572 | 78.0% | 1.60× |
| 2019 | 2,204 | 83.3% | 1.10× |
| 2018 | 1,992 | 82.4% | 1.04× |
| 2017 | 3,031 | 81.2% | 0.96× |
| 2016 | 4,263 | 80.3% | 0.87× |
| 2015 | 5,849 | 80.4% | 0.73× |
| 2014 | 3,654 | 76.2% | 0.81× |
| 2013 | 6,233 | 74.7% | 0.77× |
| 2012 | 2,294 | 74.7% | 0.72× |
| 2011 | 2,429 | 74.4% | 0.69× |
| 2010 | 2,232 | 64.7% | 0.88× |
| 2009 | 2,330 | 64.0% | 0.87× |
| 2008 | 2,912 | 66.0% | 0.79× |
| 2007 | 3,691 | 66.3% | 0.78× |
| 2006 | 3,075 | 68.4% | 0.72× |
| 2005 | 2,011 | 70.2% | 0.67× |
Years with fewer tests are shown for completeness; only years with enough tests have their own page.
Compared with similar models
Check a specific Mercedes-Benz CLS
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UK number plate or 17-character VIN
About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.