MAZDA B SERIES (2004)
Running costs, common problems, and reliability data based on 304 real MOT tests in 2024.
MOT Pass Rate
70%
Total Tests (2024)
304
Avg Mileage
117,876 mi
Est. Annual Cost
£2,050
Is the 2004 MAZDA B SERIES reliable?
Average reliability. Expect some repairs as it ages. That's 12 points below the national average of 82%. It falls below the MAZDA brand average of 81%.
At 20 years old, 70% of MAZDA B SERIESs from 2004 passed their MOT first time in 2024. That's based on 304 tests across the UK. The average mileage at this age is 117,876 miles.
How does the 2004 MAZDA B SERIES compare?
Mileage Analysis
The average 2004 MAZDA B SERIES has 117,876 miles on the clock, which is below the expected 148,000 miles for a 20-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a MAZDA B SERIES?
The most reliable year is the 2001 model with a 76% MOT pass rate, while the 2004 model has the lowest at 70%. Consider a different year if reliability is a priority.
How much does a 2004 MAZDA B SERIES 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.
MAZDA B SERIES by Year
Checking a specific MAZDA B SERIES?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2004 MAZDA B SERIES
The 2004 MAZDA B SERIES is a large car with a 2499cc diesel engine. 304 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2004, the average MOT pass rate is 72%, and this model falls short of that benchmark.
With an average of 117,876 miles at 20 years old, MAZDA B SERIES owners tend to use this car less than the typical driver.
2004 MAZDA B SERIES Fuel Costs
The 2499cc 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 2004 MAZDA B SERIES?
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 70% pass rate. Keeping on top of servicing will help avoid surprises.
MAZDA B SERIES Reliability Trend
The MAZDA B SERIES has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2004 MAZDA B SERIES
At 20 years old, the MAZDA B SERIES 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 2004 MAZDA B SERIES
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- HONDA CIVIC (2006) 71% pass rate (+1%) from 28,045 tests
- BMW 3 SERIES (2005) 78% pass rate (+8%) from 24,924 tests
- VOLKSWAGEN TRANSPORTER (2006) 73% pass rate (+3%) from 23,355 tests
- LAND ROVER DISCOVERY (2006) 78% pass rate (+8%) from 17,245 tests