BMW 320 (2004)
Running costs, reliability data, and common problems from 49 real MOT tests.
Annual Cost
£1,707
£142/month
MOT Pass Rate
82%
Good
Road Tax
£265
Based on CC/year
Insurance
Grp 18-32
1998cc Diesel
Solid Option
82% pass rate, £1707/year to run. Close to the national average.
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Annual Running Costs
~48 mpg
Based on 1998cc
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
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the BMW brand average of 88%.
At 22 years old, 82% of BMW 320s from 2004 passed their MOT first time in 2026. That's based on 49 tests across the UK. The average mileage at this age is 131,336 miles.
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How Does It Compare?
Mileage Analysis
131,336
Average miles
162,800
Expected for age
The average 2004 BMW 320 has 131,336 miles on the clock, which is in line with the expected 162,800 miles for a 22-year-old car, suggesting normal everyday use.
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Best Year to Buy?
The most reliable year is the 2022 model with a 97% MOT pass rate, while the 2005 model has the lowest at 73%. The 2004 sits between the two at 82%.
BMW 320 by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2022 | 97% | 61 | 22,624 mi | |
| 2021 | 92% | 2,533 | 29,483 mi | |
| 2020 | 92% | 9,105 | 34,897 mi | |
| 2019 | 92% | 14,440 | 42,764 mi | |
| 2018 | 91% | 17,053 | 59,320 mi | |
| 2017 | 90% | 26,367 | 71,271 mi | |
| 2016 | 90% | 6,365 | 78,781 mi | |
| 2015 | 90% | 555 | 79,550 mi | |
| 2014 | 85% | 441 | 82,085 mi | |
| 2013 | 89% | 611 | 77,974 mi | |
| 2012 | 83% | 409 | 87,516 mi | |
| 2011 | 87% | 260 | 84,622 mi | |
| 2010 | 86% | 291 | 91,150 mi | |
| 2009 | 81% | 162 | 104,384 mi | |
| 2008 | 84% | 177 | 101,514 mi | |
| 2007 | 79% | 167 | 121,206 mi | |
| 2006 | 74% | 145 | 143,980 mi | |
| 2005 | 73% | 63 | 128,780 mi | |
| 2004 | 82% | 49 | 131,336 mi | |
| 2003 | 77% | 30 | 119,901 mi | |
| 1990 | 86% | 35 | 111,395 mi |
Similar Cars to Consider
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About the 2004 BMW 320
The 2004 BMW 320 is a premium with a 1998cc diesel engine. 49 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 22% of all 2004 cars for reliability.
With an average of 131,336 miles at 22 years old, BMW 320 owners drive about as much as the UK average.
2004 BMW 320 Fuel Costs
The 1998cc 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 320?
Total estimated annual running cost is £1,707 (£142/month), broken down as £1037 fuel, £265 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 82% pass rate. Keeping on top of servicing will help avoid surprises.
BMW 320 Reliability Trend
Newer BMW 320s show better MOT pass rates than older ones, with an average improvement of 9 percentage points.
Buying a Used 2004 BMW 320
At 22 years old, the BMW 320 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. If you're flexible on year, the 2022 model has the highest pass rate at 97%. Note: with only 49 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2004 BMW 320'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 131k 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 320 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| BMW 320(2004) | 82% | £1037 | £265 | Grp 18-32 | £1707 |
| VOLKSWAGEN GOLF(2006) | 72% | £1037 | £135 | Grp 18-32 | £1727+£20 |
| VAUXHALL ASTRA(2005) | 69% | £905 | £135 | Grp 12-25 | £1795+£88 |
| HONDA CIVIC(2006) | 71% | £1245 | £250 | Grp 25-38 | £2050+£343 |
| AUDI A3(2006) | 73% | £905 | £135 | Grp 12-25 | £1595-£112 |
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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