Dethleffs Trend (2018)
Estimated running costs and MOT pass rates from 82 MOT tests in 2024.
Annual Cost
£2,431
£203/month
MOT Pass Rate
78%
Average
Road Tax
£200
Standard rate/year
Est. Insurance
n/a
2300cc Diesel
Check Carefully
78% pass rate, £2,431/year to run. Close to the average across all models.
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Annual Running Costs
~40 mpg
Car rate estimate; motorhomes are taxed differently
Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Average reliability. Expect some repairs as it ages. That's close to the average of 82% across all models in our data. It falls below the Dethleffs brand average of 90%.
78% of MOT tests on Dethleffs Trends from 2018 ended in a pass in 2024, when they were about 6 years old. That's based on 82 tests across the UK, retests included. The average mileage recorded at those tests was 26,227 miles.
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How Does It Compare?
Mileage Analysis
26,227
Average miles
44,400
Expected for age
The average 2018 Dethleffs Trend had 26,227 miles on the clock at its 2024 MOT, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Dethleffs Trend by Year
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About the 2018 Dethleffs Trend
The 2018 Dethleffs Trend is a motorhome. Our records list a 2300cc diesel engine, though engines vary between versions. 82 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It sits in the bottom 4% of 2018 models for MOT pass rate.
With an average of 26,227 miles recorded at its 2024 MOT tests, Dethleffs Trend owners tend to use this car less than the typical driver.
2018 Dethleffs Trend Fuel Costs
The 2300cc diesel engine offers a reasonable balance between performance and economy. Expect around 40 mpg in mixed driving, which works out to roughly £1,676 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2018 Dethleffs Trend?
Total estimated annual running cost is £2,431 (£203/month), broken down as £1,676 fuel, £200 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 78% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2018 Dethleffs Trend
At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. Note: with only 82 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
DPF (Diesel Particulate Filter)
Watch outShort journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.
Turbo Wear
Watch outDiesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.
AdBlue System
Medium riskPost-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.
EGR Valve
Watch outExhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.
Dual Mass Flywheel
Watch outLarger diesel engines put extra strain on the dual mass flywheel. Listen for rattling at idle. Replacement with clutch is £800-£1,500.
Suspension Wear
Medium riskShock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2018 Dethleffs Trend stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Dethleffs Trend(2018) | 78% | £1,676 | £200 | n/a | £2,431 |
| Ford Transit(2017) | 81% | £1,397 | £200 | n/a | £2,002-£429 |
| Ford Transit Custom(2019) | 87% | £1,397 | £200 | n/a | £2,002-£429 |
| Volkswagen Transporter(2017) | 85% | £1,397 | £200 | n/a | £2,002-£429 |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2018 Dethleffs Trend
Is the 2018 Dethleffs Trend reliable?
Average reliability. Expect some repairs as it ages. 78% of MOT tests on 2018 Dethleffs Trends ended in a pass, from 82 tests (DVSA MOT data for tests in 2024, retests included). That's 4 points below the average of 82% across all models in the same data.
How much does a 2018 Dethleffs Trend cost to run?
Our estimate is £2,431 a year (£203 a month): £1,676 fuel, £200 road tax, £55 MOT and £500 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2018 Dethleffs Trend?
78% of 82 MOT tests on the 2018 Dethleffs Trend ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 588th of 607 models first registered in 2018 (bottom 4%).
What is the average mileage for a 2018 Dethleffs Trend?
The average mileage recorded at MOT tests on the 2018 Dethleffs Trend is 26,227 miles, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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