D Dethleffs motorhome MOT Pass Rate & Official DVSA Failure Statistics

Dethleffs Motorhome MOT History and Failure Rates vs UK National Average

The Dethleffs motorhome passed on its first attempt in 92.0%, and its overall record sits +11.6 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Dethleffs motorhome in the 2023–2025 data: 1,371 tests across 8 model years (2015–2022). 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 Dethleffs Motorhome MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Dethleffs motorhome, the Lamps, reflectors and electrical equipment 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 Dethleffs motorhome's recorded defect strings, merged across its year pages.

Top Recorded Dethleffs Motorhome DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Dethleffs motorhome, each with how many of the model's 1,371 tests it was noted on.

• "Registration plate lamp(s) inoperative in the case of multiple lamps or light sources" (Minor) — noted on about 34 Dethleffs motorhome tests, 2.5% of the model's MOT record.
• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 30 Dethleffs motorhome tests, 2.2% of the model's MOT record.
• "Wipers does not clear the windscreen effectively" (Major) — noted on about 22 Dethleffs motorhome tests, 1.6% of the model's MOT record.
• "Srs malfunction indicator lamp warning lamp indicates a fault" (Major) — noted on about 18 Dethleffs motorhome tests, 1.3% of the model's MOT record.
• "Wipers blade defective" (Minor) — noted on about 15 Dethleffs motorhome tests, 1.1% of the model's MOT record.
• "Headlamp aim too high" (Rectified) — noted on about 11 Dethleffs motorhome tests, 0.8% of the model's MOT record.

Best and Worst Dethleffs Motorhome Model Years by Pass Rate

The strongest Dethleffs motorhome model year on record is 2018 (97.1% across 171 tests), and the weakest is 2021 (90.0%). The gap between them is 7.1 points. 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 Dethleffs Motorhome Owners

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

• the lights — “registration plate lamp(s) inoperative in the case of multiple lamps or light sources”

  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.

• the windscreen — “windscreen damaged”

  Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.

• the wipers and washers — “wipers does not clear the windscreen effectively”

  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.

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

Frequently Asked Questions: Dethleffs Motorhome MOT & Reliability