Citroen Synergie (1999)

Estimated running costs and MOT pass rates from 46 MOT tests in 2024.

Annual Cost

£2,327

£194/month

MOT Pass Rate

70%

Average

Road Tax

£375

Estimated/year

Est. Insurance

Grp 18-32

1905cc Diesel

Check Carefully

70% pass rate, £2,327/year to run. 12 points below average.

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Diesel1905cc27 years old46 tests135k miles avg

Annual Running Costs

Fuel (Diesel, 1905cc)

~48 mpg

£1,397

Road Tax

Pre-2001 engine size rate

£375

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£500

Total per year£2,327

Per month£194/mo

Per week£45/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.

Reliability Verdict

70% MOT pass rate(Average)

0%All-model avg: 82%100%

Average reliability. Expect some repairs as it ages. That's 12 points below the average of 82% across all models in our data. It falls below the Citroen brand average of 79%.

70% of MOT tests on Citroen Synergies from 1999 ended in a pass in 2024, when they were about 25 years old. That's based on 46 tests across the UK, retests included. The average mileage recorded at those tests was 135,262 miles.

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How Does It Compare?

Rank among 1999 models272nd of 361(bottom 25%)

Rank among Citroen models459th of 589(bottom 23%)

vs average of all models-12%(82% avg)

vs 1999 models average-5%(75% avg)

vs Citroen average-9%(79% avg)

Mileage Analysis

135,262

Average miles

185,000

Expected for age

The average 1999 Citroen Synergie had 135,262 miles on the clock at its 2024 MOT, which is below the expected 185,000 miles for a 25-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Citroen Synergie by Year

Year	Pass Rate	Tests	Avg Mileage
2002	65%	37	139,819 mi
2001	61%	105	150,082 mi
2000	64%	50	166,553 mi
1999	70%	46	135,262 mi
1998	66%	65	170,244 mi

Similar Cars to Consider

Volkswagen Golf

2001 · 1896cc Diesel

£2,227/year

72%

+2%

BMW 3 Series

2000 · 1951cc Diesel

£2,327/year

77%

+7%

Ford Fiesta

1998 · 1753cc Diesel

£2,527/year

65%

-5%

Volvo V70

2001 · 2401cc Diesel

£2,641/year

71%

+1%

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About the 1999 Citroen Synergie

The 1999 Citroen Synergie is a family car. Our records list a 1905cc diesel engine, though engines vary between versions. 46 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It sits in the bottom 25% of 1999 models for MOT pass rate.

With an average of 135,262 miles recorded at its 2024 MOT tests, Citroen Synergie owners tend to use this car less than the typical driver.

1999 Citroen Synergie Fuel Costs

The 1905cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,397 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 1999 Citroen Synergie?

Total estimated annual running cost is £2,327 (£194/month), broken down as £1,397 fuel, £375 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 70% pass rate. Keeping on top of servicing will help avoid surprises.

Buying a Used 1999 Citroen Synergie

At 27 years old, the Citroen Synergie is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. Note: with only 46 tests in our data, these figures should be treated as indicative rather than definitive.

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

Watch out

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

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.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Watch out

With an average of 135k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Engine Mounts

Medium risk

Worn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.

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.

Running Costs Compared

How the 1999 Citroen Synergie stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Citroen Synergie(1999)	70%	£1,397	£375	Grp 18-32	£2,327
Volkswagen Golf(2001)	72%	£1,397	£275	Grp 18-32	£2,227-£100
BMW 3 Series(2000)	77%	£1,397	£375	Grp 18-32	£2,327same
Ford Fiesta(1998)	65%	£1,397	£375	Grp 18-32	£2,527+£200
Volvo V70(2001)	71%	£1,676	£410	Grp 25-38	£2,641+£314

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 1999 Citroen Synergie

Is the 1999 Citroen Synergie reliable?

Average reliability. Expect some repairs as it ages. 70% of MOT tests on 1999 Citroen Synergies ended in a pass, from 46 tests (DVSA MOT data for tests in 2024, retests included). That's 12 points below the average of 82% across all models in the same data.

How much does a 1999 Citroen Synergie cost to run?

Our estimate is £2,327 a year (£194 a month): £1,397 fuel, £375 road tax, £55 MOT and £500 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 1999 Citroen Synergie?

70% of 46 MOT tests on the 1999 Citroen Synergie ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 272nd of 361 models first registered in 1999 (bottom 25%).

What is the average mileage for a 1999 Citroen Synergie?

The average mileage recorded at MOT tests on the 1999 Citroen Synergie is 135,262 miles, which is below the expected 185,000 miles for a 25-year-old car. This suggests lighter use than average, which generally means less wear on major components.