2015 Dethleffs motorhome MOT pass rate

2015
Motorhome
9 trims combined
typical 23,945 mi

Check your postcode

Pass rate by postcode →

Pass rate

90.3%

Above average — 8.2 pts ahead of the 82.1% that cars this age and mileage manage.

Across 145 recorded tests.

Typical repair bill £24–£66

Most common fault

Brakes

18.1% of faults · 20.9% nationally

mostly worn pads and discs, corroded pipes and a handbrake that will not hold.

Every failure, with what it costs →

Which year to buy

Best 2018 97.1% pass
Avoid 2021 90.0% pass

Across the 8 years on record, a spread of 7.1 points. See every year →

First-attempt pass: 89.5%
Typical mileage: 24k mi

The 2015 Dethleffs motorhome MOT pass rate is 90.3% of its MOT tests — 8.2 points ahead of what its age and mileage predict. Brakes is the biggest single reason it fails, at 18.1% of what testers record.

Expert verdict

Steering: 4.9× the national share

Steering accounts for 12.5% of everything recorded on the 2015 Dethleffs Motorhome, against 2.6% nationally — 9.9 points above. Brakes are still the single largest share at 18.1%, but at 20.9% nationally that one is ordinary. Ask for the steering to be checked for play with the wheels on the ground, not on a jack.

Beats its own age and mileage. Once you allow for how old and how far these motorhomes have been driven, the expected pass rate is 82.1% and this one manages 90.3% — 8.2 points ahead of what its age and mileage predict.
Failures here tend to be cheap ones. 59% of the repairs this model fails on cost under £30 in parts. The pass rate matters less than what a bad afternoon at the test centre actually costs you.

Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out

Every Dethleffs motorhome first registered in 2015 is combined here — 9 trim and body variants in total — so the sample is as large as the DVSA data allows.

How does the 2015 Dethleffs motorhome compare?

Cars of this age and mileage average 82.1%, so this figure is 8.2 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 89.5%. The median 2015 Dethleffs motorhome in this dataset had covered 23,945 mi.

Pass rates also shift with the test month: tests recorded October–March passed 91.1% of the time, April–September 89.9%.

The single most recorded failure item is "Registration plate lamp(s) inoperative in the case of multiple lamps or light sources", noted on 3.45% of tests.

145 recorded tests behind this page.
90.3% overall pass rate, 89.5% on a first attempt.
Across every year of the Dethleffs motorhome, the average is 92.6% — best year 2018 (97.1%), worst 2021 (90.0%).

Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.

This page's data

Tests analysed: 145
Typical mileage (median): 23,945 mi
Make and model: Dethleffs Motorhome
Updated: 2026-11-07

Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.

Top part to budget for

Number Plate Lamp

Usually a DIY or independent-garage job.

Does mileage affect the Motorhome MOT pass rate?

0-30k 90.7%

30-60k 89.2%

Pass rate by odometer reading. Bar lengths start at 81% so small gaps stay visible.

Regional pass rates for the Motorhome

Region	Tests	Pass rate
South East	30	93.3%
East of England	25	84.0%
East Midlands	21	95.2%
Yorkshire	18	94.4%

Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.

What fails a 2015 Motorhome

Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.

Brakes 18.1%

−2.8 pts vs national national 20.9% Price brakes parts

Lamps & electrics 18.1%

+5.9 pts vs national national 12.2% Order bulbs & wipers

Tyres 13.9%

−5.9 pts vs national national 19.8% Compare tyre prices

Suspension 12.5%

−8.5 pts vs national national 21.0% Price suspension parts

Show the other 6 fault categories

Visibility 12.5%
Steering 12.5%
Seat belts 5.6%
Body & chassis 2.8%
Identification 2.8%
Advisories 1.4%

Shares are of every item recorded on 2015 Dethleffs Motorhome tests — a composition, so they add to 100% across all sections, not per test.

A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.

Before your test

Three checks worth doing on a 2015 Motorhome

These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.

Check the lights 3.5% of tests

“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.

What testers look for →
Check the suspension joints 2.8% of tests

“track rod end ball joint dust cover damaged or deteriorated,”

With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.
Check the windscreen 2.8% of tests

“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.

Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.

What it costs to get a 2015 Motorhome through its MOT

Across the 10 items that are recorded most often on this model, the average repair comes to £24–£66 — and 59% of those repairs are parts that cost under £30.

Average repair across the 10 common items: £24–£66
Cheapest common item: srs malfunction indicator lamp warning lamp…: £3–£12
Dearest common item: joints constant velocity boot severely…: £80–£250
Common items a careful owner can do at home: 70%
Repairs that still cost under £30: 59%

Estimates from typical UK parts prices, weighted by how often each item appears in 145 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →

Every year of the Motorhome, side by side

8 model years on record, from 2015 to 2022. Across them the pass rate runs from 90.0% to 97.1% — a spread of 7.1 points. The bar under each year is the item that failed it most often.

2015 90.3%
registration plate lamp(s)…
2016 90.3% registration plate lamp(s)…
2017 91.9% registration plate lamp(s)…
2018 97.1% registration plate lamp(s)…
2019 94.0% registration plate lamp(s)…
2020 93.0% wipers blade defective
2021 90.0% windscreen damaged but not…
2022 92.5% windscreen damaged but not…

Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.

Compare the 2015 Dethleffs Motorhome with another year

The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.

Compare 2015 with another year →

Compare two different cars instead →

Other 2015 motorhomes with a similar record

Closest pass rates among 2015 motorhomes with at least 150 tests, so a small sample cannot flatter itself into the list. Full rankings: best motorhomes and worst motorhomes for MOT pass rates.

The full DVSA record for the 2015 Dethleffs Motorhome 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold

Every inspection category

Shares of the 72 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.

Category	Items	This car	Nationally	Difference
Brakes	13	18.10%	20.89%	−2.79
Lamps, reflectors and electrical equipment	13	18.10%	12.21%	+5.89
Tyres	10	13.90%	19.76%	−5.86
Suspension	9	12.50%	20.98%	−8.48
Visibility	9	12.50%	4.97%	+7.53
Steering	9	12.50%	2.57%	+9.93
Seat belts and supplementary restraint systems	4	5.60%	0.82%	+4.78
Body, chassis, structure	2	2.80%	5.57%	−2.77
Identification of the vehicle	2	2.80%	1.76%	+1.04
Non-component advisories	1	1.40%	4.18%	−2.78

The exact failure items, in the tester's words

Share of the 145 tests on this vehicle that recorded each item
Recorded item	Severity	Tests	Est. cost	Part
Registration plate lamp(s) inoperative in the case of multiple lamps or light sources Lamps, reflectors and electrical equipment	Minor	3.5%	£5–20	Number Plate Lamp →
Srs malfunction indicator lamp warning lamp indicates a fault Seat belts and supplementary restraint systems	Major	2.8%	£3–12	Indicator Bulb →
Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt Steering	Minor	2.8%	£18–45	Ball Joint →
Windscreen damaged but not adversely affecting driver's view Visibility	Minor	2.8%	£80–200	Windscreen →
Wipers does not clear the windscreen effectively Visibility	Major	2.1%	£8–22	Wiper Blade →
Headlamp aim projected beam image is obviously incorrect Lamps, reflectors and electrical equipment	Rectified	1.4%	£30–80	Headlight Alignment →
Joints constant velocity boot severely deteriorated Body, chassis, structure	Minor	1.4%	£80–250	Body Panel Repair →
Outline marker lamp not working Lamps, reflectors and electrical equipment	Rectified	1.4%	£3–15	Bulb →
Stop lamp with a multiple light source up to 1/2 not functioning Lamps, reflectors and electrical equipment	Minor	1.4%	£3–12	Stop Light Bulb →
Anti-lock braking system warning lamp indicates an ABS fault Brakes	Major	0.69%	£3–15	Bulb →

Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.

What testers noted without failing the car

Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.

Items recorded as advisory on this vehicle
Recorded item	Severity	Tests	Est. cost
Has a tear, caused by separation or partial failure of its structure Tyres	Advisory	5.5%	£45–95
Pins and bushes pin or bush excessively worn Suspension	Advisory	5.5%	£40–150
Brake discs in such a condition that it is seriously weakened Brakes	Advisory	3.5%	£45–110
Other components leaking Steering	Advisory	1.4%	£60–200
Rams leaking Steering	Advisory	1.4%	£60–200
Registration plates insecure Identification of the vehicle	Advisory	1.4%	£20–80

Pass rate by mileage

Mileage	Tests	Pass rate	Median odometer
0-30k	108	90.7%	19,880 mi
30-60k	37	89.2%	36,215 mi

Source: 145 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.

2015 Motorhome MOT questions

What is the MOT pass rate for a 2015 Dethleffs motorhome?

90.3% of the 145 2015 Dethleffs motorhome tests in this dataset passed, against a national average of 82.1% for cars first used in 2015. First-attempt pass rate: 89.5%.

What are the most common MOT failures on a 2015 Dethleffs motorhome?

The three most recorded items are registration plate lamp(s) inoperative in the case of multiple lamps or light sources (3.45%), srs malfunction indicator lamp warning lamp indicates a fault (2.76%), track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt (2.76%). Percentages are the share of tests on this vehicle that recorded the item.

Does mileage affect the 2015 Dethleffs motorhome MOT pass rate?

Yes. Cars under 30,000 miles passed 90.7% of the time, falling to 89.2% for those over 120,000 miles. The median 2015 Dethleffs motorhome in this dataset had covered 23,945 mi.

Does the season affect the 2015 Dethleffs motorhome MOT pass rate?

Tests recorded in the winter months (October–March) passed 91.1% of the time; summer months (April–September) passed 89.9%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.