Mercedes-Benz CLS300AMG MOT Pass Rate & Official DVSA Failure Statistics

Mercedes-Benz CLS300AMG MOT History and Failure Rates vs UK National Average

The Mercedes-Benz CLS300AMG passed on its first attempt in 79.5%, and its overall record sits +1.7 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Mercedes-Benz CLS300AMG in the 2023–2025 data: 52 tests across 1 model years (2021–2021). A test still carries exactly one pass or fail verdict.

Figures are computed from every recorded DVSA test for this model in the 2023–2025 data.

Most Common Mercedes-Benz CLS300AMG MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Mercedes-Benz CLS300AMG, the Tyres section leads the record — the breakdown below shows where the recorded failures cluster, then the exact strings behind the three biggest sections.

Shares are over the Mercedes-Benz CLS300AMG's recorded defect strings, merged across its year pages.

Top Recorded Mercedes-Benz CLS300AMG DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Mercedes-Benz CLS300AMG, each with how many of the model's 52 tests it was noted on.

• "Fractured" (Major) — noted on about 3 Mercedes-Benz CLS300AMG tests, 5.8% of the model's MOT record.
• "Has a cut in excess of the requirements deep enough to reach the ply or cords" (Major) — noted on about 2 Mercedes-Benz CLS300AMG tests, 3.8% of the model's MOT record.
• "Has ply or cords exposed" (Major) — noted on about 2 Mercedes-Benz CLS300AMG tests, 3.8% of the model's MOT record.
• "Wipers blade defective" (Minor) — noted on about 2 Mercedes-Benz CLS300AMG tests, 3.8% of the model's MOT record.
• "Has a bulge, caused by separation or partial failure of its structure" (Major) — noted on about 1 Mercedes-Benz CLS300AMG tests, 1.9% of the model's MOT record.
• "Malfunction indicator lamp inoperative or indicates a malfunction" (Major) — noted on about 1 Mercedes-Benz CLS300AMG tests, 1.9% of the model's MOT record.

Best and Worst Mercedes-Benz CLS300AMG Model Years by Pass Rate

The strongest Mercedes-Benz CLS300AMG model year on record is 2021 (82.7% across 52 tests), and the weakest is 2021 (82.7%). Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Newest model year first. Only years with at least 50 recorded tests are listed.

Pre-MOT Inspection Checklist for Mercedes-Benz CLS300AMG Owners

These checks follow this Mercedes-Benz CLS300AMG's own most-recorded failure strings, starting with what a tester is most likely to flag on a Mercedes-Benz CLS300AMG.

• the wipers and washers — “wipers blade defective”

  Run the wipers with the screen wet: they should clear it in one sweep without smearing or juddering. Top the washer bottle up and check both jets hit the screen.

• the lights — “malfunction indicator lamp inoperative or indicates a malfunction”

  Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.

Derived from the DVSA failure strings testers recorded for the Mercedes-Benz CLS300AMG. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Mercedes-Benz CLS300AMG MOT & Reliability