BMW 1 SERIES (2004)
Running costs, reliability data, and common problems from 331 real MOT tests.
Annual Cost
£1,857
£155/month
MOT Pass Rate
72%
Average
Road Tax
£265
Based on CC/year
Insurance
Grp 18-32
1995cc Diesel
Check Carefully
72% pass rate, £1857/year to run. 10 points below average.
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Annual Running Costs
~48 mpg
Based on 1995cc
Higher estimate due to low pass rate
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
Average reliability. Expect some repairs as it ages. That's 10 points below the national average of 82%. It falls below the BMW brand average of 88%.
At 22 years old, 72% of BMW 1 SERIESs from 2004 passed their MOT first time in 2026. That's based on 331 tests across the UK. The average mileage at this age is 127,703 miles.
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How Does It Compare?
Mileage Analysis
127,703
Average miles
162,800
Expected for age
The average 2004 BMW 1 SERIES has 127,703 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 2020 model with a 99% MOT pass rate, while the 2004 model has the lowest at 72%. Consider a different year if reliability is a priority.
BMW 1 SERIES by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2024 | 100% | 30 | 56,153 mi | |
| 2020 | 99% | 68 | 34,205 mi | |
| 2019 | 91% | 32,819 | 41,619 mi | |
| 2018 | 92% | 27,965 | 50,440 mi | |
| 2017 | 92% | 19,053 | 56,121 mi | |
| 2016 | 92% | 7,706 | 60,320 mi | |
| 2015 | 92% | 4,010 | 67,427 mi | |
| 2014 | 90% | 5,135 | 76,509 mi | |
| 2013 | 84% | 34,105 | 93,913 mi | |
| 2012 | 82% | 29,741 | 97,892 mi | |
| 2011 | 82% | 5,252 | 97,748 mi | |
| 2010 | 80% | 4,356 | 109,865 mi | |
| 2009 | 79% | 3,810 | 113,355 mi | |
| 2008 | 80% | 2,841 | 117,331 mi | |
| 2007 | 78% | 1,973 | 120,685 mi | |
| 2006 | 77% | 1,195 | 136,390 mi | |
| 2005 | 73% | 1,066 | 137,675 mi | |
| 2004 | 72% | 331 | 127,703 mi |
Similar Cars to Consider
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About the 2004 BMW 1 SERIES
The 2004 BMW 1 SERIES is a premium with a 1995cc diesel engine. 331 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 127,703 miles at 22 years old, BMW 1 SERIES owners tend to use this car less than the typical driver.
2004 BMW 1 SERIES Fuel Costs
The 1995cc 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 2004 BMW 1 SERIES?
Total estimated annual running cost is £1,857 (£155/month), broken down as £1037 fuel, £265 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 72% pass rate. Keeping on top of servicing will help avoid surprises.
BMW 1 SERIES Reliability Trend
Newer BMW 1 SERIESs show better MOT pass rates than older ones, with an average improvement of 13 percentage points.
Buying a Used 2004 BMW 1 SERIES
At 22 years old, the BMW 1 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 BMW 1 SERIES's fuel type, age, and engine size, these are the most likely problem areas to check.
DPF (Diesel Particulate Filter)
Watch outShort journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.
Turbo Wear
Watch outDiesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.
EGR Valve
Watch outExhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.
Rust and Corrosion
Watch outAt 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 outRubber 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 outWith an average of 128k 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 riskHigh-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 riskWorn 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 riskAlways 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 BMW 1 SERIES stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| BMW 1 SERIES(2004) | 72% | £1037 | £265 | Grp 18-32 | £1857 |
| VOLKSWAGEN GOLF(2006) | 72% | £1037 | £135 | Grp 18-32 | £1727-£130 |
| VAUXHALL ASTRA(2005) | 69% | £905 | £135 | Grp 12-25 | £1795-£62 |
| HONDA CIVIC(2006) | 71% | £1245 | £250 | Grp 25-38 | £2050+£193 |
| AUDI A3(2006) | 73% | £905 | £135 | Grp 12-25 | £1595-£262 |
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.
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