MERCEDES HYMER (2020)
Running costs, reliability data, and common problems from 114 real MOT tests.
Annual Cost
£1,695
£141/month
MOT Pass Rate
97%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2987cc Diesel
Great Choice
97% pass rate, £1695/year to run. 15 points above average.
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Annual Running Costs
~40 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 15 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 6 years old, 97% of MERCEDES HYMERs from 2020 passed their MOT first time in 2026. That's based on 114 tests across the UK. The average mileage at this age is 15,102 miles.
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How Does It Compare?
Mileage Analysis
15,102
Average miles
44,400
Expected for age
The average 2020 MERCEDES HYMER has 15,102 miles on the clock, which is significantly below the expected 44,400 miles for a 6-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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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 |
Similar Cars to Consider
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About the 2020 MERCEDES HYMER
The 2020 MERCEDES HYMER is a large car with a 2987cc diesel engine. 114 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 9% of all 2020 cars for reliability.
With an average of 15,102 miles at 6 years old, MERCEDES HYMER owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
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 £1,245 per year at current diesel prices of 148p per litre (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 £1,695 (£141/month), broken down as £1245 fuel, £195 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 show better MOT pass rates than older ones, with an average improvement of 9 percentage points.
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
Based on the 2020 MERCEDES HYMER's fuel type, age, and engine size, these are the most likely problem areas to check.
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
Medium riskDiesel 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
Medium riskLarger 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 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 2020 MERCEDES HYMER stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES HYMER(2020) | 97% | £1245 | £195 | Grp 30-42 | £1695 |
| MERCEDES E(2019) | 90% | £1245 | £190 | Grp 30-42 | £1690-£5 |
| MERCEDES GLC(2018) | 91% | £1245 | £190 | Grp 30-42 | £1690-£5 |
| FORD RANGER(2019) | 87% | £1245 | £190 | Grp 35-50 | £1840+£145 |
| LAND ROVER RANGE ROVER VELAR(2018) | 91% | £1245 | £190 | Grp 30-42 | £1690-£5 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Mercedes Models
Explore other Mercedes cars or similar models in the same category.
MERCEDES A
2019 · 1461cc Diesel
MERCEDES C
2017 · 1991cc Hybrid
MERCEDES A-CLASS
2017 · 1461cc Diesel
MERCEDES E
2019 · 2925cc Diesel
MERCEDES GLC
2018 · 2987cc Diesel
FORD RANGER
2019 · 3198cc Diesel
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