How much does a 2004 MAZDA B SERIES cost to run?

Estimated annual running cost is £2,195 (£183/month), including £1245 fuel, £395 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 2004 MAZDA B SERIES?

The 2004 MAZDA B SERIES has a 70% MOT pass rate based on 304 tests in 2026. This ranks 336 out of 491 cars from 2004.

Which year MAZDA B SERIES is most reliable?

The 2001 MAZDA B SERIES has the highest MOT pass rate at 76%. The least reliable year is 2004 at 70%.

MAZDA B SERIES (2004)

Q: Is the 2004 MAZDA B SERIES reliable?

Average reliability. Expect some repairs as it ages. 70% of MAZDA B SERIESs from 2004 passed their MOT first time in 2026, based on 304 tests. That's 12 points below the national average of 82%.

Q: What is the average mileage for a 2004 MAZDA B SERIES?

The average mileage for a 2004 MAZDA B SERIES is 117,876 miles, which is below the expected 162,800 miles for a 22-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 304 real MOT tests.

Annual Cost

£2,195

£183/month

MOT Pass Rate

70%

Average

Road Tax

£395

Based on CC/year

Insurance

Grp 25-38

2499cc Diesel

Check Carefully

70% pass rate, £2195/year to run. 12 points below average.

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Diesel2499cc22 years old304 tests118k miles avg

Annual Running Costs

Fuel (Diesel, 2499cc)

~40 mpg

£1,245

Road Tax

Based on 2499cc

£395

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£500

Total per year£2,195

Per month£183/mo

Per week£42/wk

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

70% MOT pass rate(Average)

0%National avg: 82%100%

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 22 years old, 70% of MAZDA B SERIESs from 2004 passed their MOT first time in 2026. That's based on 304 tests across the UK. The average mileage at this age is 117,876 miles.

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How Does It Compare?

Rank among 2004 cars336th of 491(top 68%)

Rank among MAZDA models391th of 483(top 81%)

vs national average-12%(82% avg)

vs 2004 cars average-2%(72% avg)

vs MAZDA average-11%(81% avg)

Mileage Analysis

117,876

Average miles

162,800

Expected for age

The average 2004 MAZDA B SERIES has 117,876 miles on the clock, which is below the expected 162,800 miles for a 22-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

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.

MAZDA B SERIES by Year

Year	Pass Rate	Tests	Avg Mileage
2006	73%	244	115,029 mi
2005	72%	595	110,924 mi
2004	70%	304	117,876 mi
2003	72%	399	122,590 mi
2002	72%	421	125,247 mi
2001	76%	192	127,878 mi
2000	71%	286	133,062 mi
1999	71%	279	126,167 mi
1998	73%	100	108,386 mi
1995	78%	32	104,863 mi

Similar Cars to Consider

HONDA CIVIC

2006 · 2204cc Diesel

£2,050/year

71%

+1%

BMW 3 SERIES

2005 · 2926cc Diesel

£2,050/year

78%

+8%

VOLKSWAGEN TRANSPORTER

2006 · 2461cc Diesel

£2,050/year

73%

+3%

LAND ROVER DISCOVERY

2006 · 2495cc Diesel

£2,050/year

78%

+8%

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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 2026, 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 22 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 £2,195 (£183/month), broken down as £1245 fuel, £395 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 22 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.

Common Issues to Watch For

Based on the 2004 MAZDA B SERIES's fuel type, age, and engine size, these are the most likely problem areas to check.

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.

Dual Mass Flywheel

Watch out

Larger diesel engines put extra strain on the dual mass flywheel. Listen for rattling at idle. Replacement with clutch is £800-£1,500.

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 118k 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.

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 2004 MAZDA B SERIES stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MAZDA B SERIES(2004)	70%	£1245	£395	Grp 25-38	£2195
HONDA CIVIC(2006)	71%	£1245	£250	Grp 25-38	£2050-£145
BMW 3 SERIES(2005)	78%	£1245	£250	Grp 30-42	£2050-£145
VOLKSWAGEN TRANSPORTER(2006)	73%	£1245	£250	Grp 25-38	£2050-£145
LAND ROVER DISCOVERY(2006)	78%	£1245	£250	Grp 25-38	£2050-£145

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.