Mercedes Hymer (2020)

Estimated running costs and MOT pass rates from 114 MOT tests in 2024.

Annual Cost

£2,131

£178/month

MOT Pass Rate

97%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

n/a

2987cc Diesel

Great Choice

97% pass rate, £2,131/year to run. 15 points above average.

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Diesel2987cc6 years old114 tests15k miles avg

Annual Running Costs

Fuel (Diesel, 2987cc)

~40 mpg

£1,676

Road Tax

Car rate estimate; motorhomes are taxed differently

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,131

Per month£178/mo

Per week£41/wk

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

97% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 15 points above the average of 82% across all models in our data. It also outperforms the Mercedes brand average of 87%.

97% of MOT tests on Mercedes Hymers from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 114 tests across the UK, retests included. The average mileage recorded at those tests was 15,102 miles.

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How Does It Compare?

Rank among 2020 models237th of 2,554(top 10%)

Rank among Mercedes models126th of 1,376(top 10%)

vs average of all models+15%(82% avg)

vs 2020 models average+5%(92% avg)

vs Mercedes average+10%(87% avg)

Mileage Analysis

15,102

Average miles

29,600

Expected for age

The average 2020 Mercedes Hymer had 15,102 miles on the clock at its 2024 MOT, which is below the expected 29,600 miles for a 4-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Mercedes Hymer by Year

Year	Pass Rate	Tests	Avg Mileage
2021	96%	84	15,168 mi
2020	97%	114	15,102 mi
2019	93%	131	17,256 mi
2018	93%	124	24,392 mi
2017	93%	115	24,882 mi
2016	93%	56	26,923 mi
2015	100%	32	49,884 mi
2006	84%	44	72,538 mi
2004	81%	37	86,573 mi
2003	90%	49	67,183 mi
2002	82%	44	72,456 mi
2001	78%	45	84,193 mi
1998	83%	40	78,746 mi
1994	73%	45	128,584 mi
1993	70%	104	158,587 mi
1992	74%	34	133,318 mi
1990	71%	35	107,692 mi

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About the 2020 Mercedes Hymer

The 2020 Mercedes Hymer is a motorhome. Our records list a 2987cc diesel engine, though engines vary between versions. 114 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It ranks in the top 10% of all 2020 models for MOT pass rate.

With an average of 15,102 miles recorded at its 2024 MOT tests, Mercedes Hymer owners tend to use this car less than the typical driver.

2020 Mercedes Hymer Fuel Costs

The 2987cc diesel engine is on the larger side, so fuel won't be this car's strong point. 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 2020 Mercedes Hymer?

Total estimated annual running cost is £2,131 (£178/month), broken down as £1,676 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 97% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Mercedes Hymer Reliability Trend

Newer Mercedes Hymers pass their MOT more often than older ones, by 13 percentage points on average, which is mostly down to age and wear.

Buying a Used 2020 Mercedes Hymer

At 6 years old, the Mercedes Hymer offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.

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 out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Medium risk

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Dual Mass Flywheel

Medium risk

Larger diesel engines put extra strain on the dual mass flywheel. Listen for rattling at idle. Replacement with clutch is £800-£1,500.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Questions about the 2020 Mercedes Hymer

Is the 2020 Mercedes Hymer reliable?

Excellent reliability. Very few MOT failures. 97% of MOT tests on 2020 Mercedes Hymers ended in a pass, from 114 tests (DVSA MOT data for tests in 2024, retests included). That's 15 points above the average of 82% across all models in the same data.

How much does a 2020 Mercedes Hymer cost to run?

Our estimate is £2,131 a year (£178 a month): £1,676 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2020 Mercedes Hymer?

97% of 114 MOT tests on the 2020 Mercedes Hymer ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 237th of 2,554 models first registered in 2020 (top 10%).

Which year Mercedes Hymer has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 Mercedes Hymer has the highest MOT pass rate at 97% and the 1993 the lowest at 70%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2020 Mercedes Hymer?

The average mileage recorded at MOT tests on the 2020 Mercedes Hymer is 15,102 miles, which is below the expected 29,600 miles for a 4-year-old car. This suggests lighter use than average, which generally means less wear on major components.