CITROEN C4 SENSE + BLUEHDI S/S (2021)
Running costs, reliability data, and common problems from 45 real MOT tests.
Annual Cost
£1,505
£125/month
MOT Pass Rate
87%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 12-25
1500cc Diesel
Solid Option
87% pass rate, £1505/year to run. 5 points above average.
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Annual Running Costs
~55 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 close to the national average of 82%. It also outperforms the CITROEN brand average of 79%.
At 5 years old, 87% of CITROEN C4 SENSE + BLUEHDI S/Ss from 2021 passed their MOT first time in 2026. That's based on 45 tests across the UK. The average mileage at this age is 30,893 miles.
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How Does It Compare?
Mileage Analysis
30,893
Average miles
37,000
Expected for age
The average 2021 CITROEN C4 SENSE + BLUEHDI S/S has 30,893 miles on the clock, which is in line with the expected 37,000 miles for a 5-year-old car, suggesting normal everyday use.
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About the 2021 CITROEN C4 SENSE + BLUEHDI S/S
The 2021 CITROEN C4 SENSE + BLUEHDI S/S is a small family car with a 1500cc diesel engine. 45 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 89% of 2021 cars for MOT pass rates.
With an average of 30,893 miles at 5 years old, CITROEN C4 SENSE + BLUEHDI S/S owners drive about as much as the UK average.
2021 CITROEN C4 SENSE + BLUEHDI S/S Fuel Costs
The 1500cc diesel engine offers a reasonable balance between performance and economy. Expect around 55 mpg in mixed driving, which works out to roughly £905 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 C4 SENSE + BLUEHDI S/S?
Total estimated annual running cost is £1,505 (£125/month), broken down as £905 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 CITROEN C4 SENSE + BLUEHDI S/S
At 5 years old, the CITROEN C4 SENSE + BLUEHDI S/S offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 45 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2021 CITROEN C4 SENSE + BLUEHDI S/S'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.
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 C4 SENSE + BLUEHDI S/S stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| CITROEN C4 SENSE + BLUEHDI S/S(2021) | 87% | £905 | £195 | Grp 12-25 | £1505 |
| FORD FOCUS(2019) | 89% | £905 | £190 | Grp 12-25 | £1500-£5 |
| MERCEDES A(2019) | 91% | £905 | £190 | Grp 12-25 | £1350-£155 |
| FORD KUGA(2019) | 91% | £1037 | £190 | Grp 18-32 | £1482-£23 |
| VOLKSWAGEN POLO(2019) | 89% | £905 | £190 | Grp 12-25 | £1500-£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 Citroen Models
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2010 · 1398cc Diesel
FORD FOCUS
2019 · 1499cc Diesel
MERCEDES A
2019 · 1461cc Diesel
FORD KUGA
2019 · 1997cc Diesel
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