CITROEN RELAY 35 HVY L4H2 ENT BHDI SS (2021)
Running costs, reliability data, and common problems from 142 real MOT tests.
Annual Cost
£1,845
£154/month
MOT Pass Rate
89%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 25-38
2200cc Diesel
Solid Option
89% pass rate, £1845/year to run. 7 points above average.
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Annual Running Costs
~40 mpg
Flat rate (post-2017)
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
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%. It also outperforms the CITROEN brand average of 79%.
At 5 years old, 89% of CITROEN RELAY 35 HVY L4H2 ENT BHDI SSs from 2021 passed their MOT first time in 2026. That's based on 142 tests across the UK. The average mileage at this age is 25,966 miles.
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How Does It Compare?
Mileage Analysis
25,966
Average miles
37,000
Expected for age
The average 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS has 25,966 miles on the clock, which is below the expected 37,000 miles for a 5-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 2020 model with a 94% MOT pass rate, while the 2021 model has the lowest at 89%. Consider a different year if reliability is a priority.
CITROEN RELAY 35 HVY L4H2 ENT BHDI SS by Year
Similar Cars to Consider
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About the 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS
The 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS is a family car with a 2200cc diesel engine. 142 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 81% of 2021 cars for MOT pass rates.
With an average of 25,966 miles at 5 years old, CITROEN RELAY 35 HVY L4H2 ENT BHDI SS owners tend to use this car less than the typical driver.
2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS Fuel Costs
The 2200cc diesel engine offers a reasonable balance between performance and economy. 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 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS?
Total estimated annual running cost is £1,845 (£154/month), broken down as £1245 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS
At 5 years old, the CITROEN RELAY 35 HVY L4H2 ENT BHDI SS 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 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS'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
Low riskExhaust 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 2021 CITROEN RELAY 35 HVY L4H2 ENT BHDI SS stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| CITROEN RELAY 35 HVY L4H2 ENT BHDI SS(2021) | 89% | £1245 | £195 | Grp 25-38 | £1845 |
| FORD KUGA(2019) | 91% | £1037 | £190 | Grp 18-32 | £1482-£363 |
| FORD TRANSIT CUSTOM(2019) | 87% | £1037 | £190 | Grp 18-32 | £1632-£213 |
| BMW 118(2020) | 93% | £1037 | £190 | Grp 18-32 | £1482-£363 |
| VOLKSWAGEN T-ROC(2019) | 94% | £1037 | £190 | Grp 18-32 | £1482-£363 |
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 Citroen Models
Explore other Citroen cars or similar models in the same category.
CITROEN C4
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CITROEN DS3
2014 · 1560cc Diesel
CITROEN C3
2010 · 1398cc Diesel
FORD KUGA
2019 · 1997cc Diesel
FORD TRANSIT CUSTOM
2019 · 2000cc Diesel
BMW 118
2020 · 1995cc Diesel
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