MERCEDES 200 (2018)
Running costs, reliability data, and common problems from 34 real MOT tests.
Annual Cost
£1,487
£124/month
MOT Pass Rate
97%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1800cc Diesel
Great Choice
97% pass rate, £1487/year to run. 15 points above average.
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Annual Running Costs
~48 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 8 years old, 97% of MERCEDES 200s from 2018 passed their MOT first time in 2026. That's based on 34 tests across the UK. The average mileage at this age is 38,851 miles.
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How Does It Compare?
Mileage Analysis
38,851
Average miles
59,200
Expected for age
The average 2018 MERCEDES 200 has 38,851 miles on the clock, which is below the expected 59,200 miles for a 8-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Best Year to Buy?
The most reliable year is the 1991 model with a 96% MOT pass rate, while the 1990 model has the lowest at 65%. The 2018 sits between the two at 97%.
MERCEDES 200 by Year
Similar Cars to Consider
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About the 2018 MERCEDES 200
The 2018 MERCEDES 200 is a family car with a 1800cc diesel engine. 34 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 12% of all 2018 cars for reliability.
With an average of 38,851 miles at 8 years old, MERCEDES 200 owners tend to use this car less than the typical driver.
2018 MERCEDES 200 Fuel Costs
The 1800cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 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 2018 MERCEDES 200?
Total estimated annual running cost is £1,487 (£124/month), broken down as £1037 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 200 Reliability Trend
Older MERCEDES 200s tend to have better MOT pass rates than newer ones, with an average decline of 6 percentage points across model years.
Buying a Used 2018 MERCEDES 200
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. If you're flexible on year, the 1991 model has the highest pass rate at 96%. Note: with only 34 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2018 MERCEDES 200'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
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.
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 MERCEDES 200 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES 200(2018) | 97% | £1037 | £195 | Grp 18-32 | £1487 |
| VOLKSWAGEN GOLF(2017) | 91% | £905 | £190 | Grp 12-25 | £1350-£137 |
| FORD FOCUS(2019) | 89% | £905 | £190 | Grp 12-25 | £1500+£13 |
| MERCEDES A(2019) | 91% | £905 | £190 | Grp 12-25 | £1350-£137 |
| MERCEDES A-CLASS(2017) | 88% | £905 | £190 | Grp 12-25 | £1500+£13 |
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
VOLKSWAGEN GOLF
2017 · 1598cc Diesel
FORD FOCUS
2019 · 1499cc Diesel
MERCEDES A
2019 · 1461cc Diesel
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