VAUXHALL SIGNUM (2008)
Running costs, common problems, and reliability data based on 63 real MOT tests in 2024.
MOT Pass Rate
63%
Total Tests (2024)
63
Avg Mileage
130,218 mi
Est. Annual Cost
£1,927
Is the 2008 VAUXHALL SIGNUM reliable?
Below average reliability. Budget extra for maintenance and repairs. That's 19 points below the national average of 82%. It falls below the VAUXHALL brand average of 84%.
At 16 years old, 63% of VAUXHALL SIGNUMs from 2008 passed their MOT first time in 2024. That's based on 63 tests across the UK. The average mileage at this age is 130,218 miles.
How does the 2008 VAUXHALL SIGNUM compare?
Mileage Analysis
The average 2008 VAUXHALL SIGNUM has 130,218 miles on the clock, which is in line with the expected 118,400 miles for a 16-year-old car, suggesting normal everyday use.
Best year to buy a VAUXHALL SIGNUM?
The most reliable year is the 2003 model with a 77% MOT pass rate, while the 2008 model has the lowest at 63%. Consider a different year if reliability is a priority.
How much does a 2008 VAUXHALL SIGNUM cost to run?
Higher than average due to low pass rate
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
Checking a specific VAUXHALL SIGNUM?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2008 VAUXHALL SIGNUM
The 2008 VAUXHALL SIGNUM is a family car with a 1910cc diesel engine. 63 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 97% of 2008 cars for MOT pass rates.
With an average of 130,218 miles at 16 years old, VAUXHALL SIGNUM owners drive about as much as the UK average.
2008 VAUXHALL SIGNUM Fuel Costs
The 1910cc 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 2008 VAUXHALL SIGNUM?
Total estimated annual running cost is £1,927 (£161/month), broken down as £1037 fuel, £135 road tax, £55 MOT, and £700 predicted repairs. The higher repair estimate reflects the 63% MOT pass rate. Cars in this bracket tend to need work on suspension, brakes, and emissions components.
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 2008 VAUXHALL SIGNUM
At 16 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. Note: with only 63 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2008 VAUXHALL SIGNUM
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- VAUXHALL ASTRA (2010) 74% pass rate (+11%) from 92,611 tests
- VOLKSWAGEN GOLF (2010) 77% pass rate (+14%) from 87,733 tests
- VOLKSWAGEN POLO (2010) 74% pass rate (+11%) from 75,715 tests
- HONDA CIVIC (2007) 72% pass rate (+9%) from 45,025 tests