VAUXHALL SIGNUM (2003)
Running costs, common problems, and reliability data based on 111 real MOT tests in 2024.
MOT Pass Rate
77%
Total Tests (2024)
111
Avg Mileage
111,342 mi
Est. Annual Cost
£2,050
Is the 2003 VAUXHALL SIGNUM reliable?
Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the VAUXHALL brand average of 84%.
At 21 years old, 77% of VAUXHALL SIGNUMs from 2003 passed their MOT first time in 2024. That's based on 111 tests across the UK. The average mileage at this age is 111,342 miles.
How does the 2003 VAUXHALL SIGNUM compare?
Mileage Analysis
The average 2003 VAUXHALL SIGNUM has 111,342 miles on the clock, which is below the expected 155,400 miles for a 21-year-old car. This suggests lighter use than average, which generally means less wear on major components.
How much does a 2003 VAUXHALL SIGNUM cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
VAUXHALL SIGNUM by Year
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About the 2003 VAUXHALL SIGNUM
The 2003 VAUXHALL SIGNUM is a large car with a 2959cc diesel engine. 111 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 2003, the average MOT pass rate is 72%, and this model beats that benchmark.
With an average of 111,342 miles at 21 years old, VAUXHALL SIGNUM owners tend to use this car less than the typical driver.
2003 VAUXHALL SIGNUM Fuel Costs
The 2959cc 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 2003 VAUXHALL SIGNUM?
Total estimated annual running cost is £2,050 (£171/month), broken down as £1245 fuel, £250 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 77% pass rate. Keeping on top of servicing will help avoid surprises.
VAUXHALL SIGNUM Reliability Trend
The VAUXHALL SIGNUM has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2003 VAUXHALL SIGNUM
At 21 years old, the VAUXHALL SIGNUM 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.
Alternatives to the 2003 VAUXHALL SIGNUM
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- BMW 3 SERIES (2005) 78% pass rate (+1%) from 24,924 tests
- VOLKSWAGEN TRANSPORTER (2005) 72% pass rate (-5%) from 20,813 tests
- LAND ROVER DISCOVERY (2005) 78% pass rate (+1%) from 17,079 tests
- AUDI A4 (2004) 74% pass rate (-3%) from 12,946 tests