Is the 1998 BMW 525 reliable?

Average reliability. Expect some repairs as it ages. 70% of BMW 525s from 1998 passed their MOT first time in 2026, based on 33 tests. That's 12 points below the national average of 82%.

How much does a 1998 BMW 525 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 1998 BMW 525?

The 1998 BMW 525 has a 70% MOT pass rate based on 33 tests in 2026. This ranks 272 out of 340 cars from 1998.

Which year BMW 525 is most reliable?

The 2016 BMW 525 has the highest MOT pass rate at 91%. The least reliable year is 1990 at 69%.

BMW 525 (1998)

Q: What is the average mileage for a 1998 BMW 525?

The average mileage for a 1998 BMW 525 is 153,429 miles, which is below the expected 207,200 miles for a 28-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 33 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

2498cc Diesel

Check Carefully

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

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Diesel2498cc28 years old33 tests153k miles avg

Annual Running Costs

Fuel (Diesel, 2498cc)

~40 mpg

£1,245

Road Tax

Based on 2498cc

£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 BMW brand average of 88%.

At 28 years old, 70% of BMW 525s from 1998 passed their MOT first time in 2026. That's based on 33 tests across the UK. The average mileage at this age is 153,429 miles.

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How Does It Compare?

Rank among 1998 cars272th of 340(top 80%)

Rank among BMW models1546th of 1,564(top 99%)

vs national average-12%(82% avg)

vs 1998 cars average-5%(75% avg)

vs BMW average-18%(88% avg)

Mileage Analysis

153,429

Average miles

207,200

Expected for age

The average 1998 BMW 525 has 153,429 miles on the clock, which is below the expected 207,200 miles for a 28-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 2016 model with a 91% MOT pass rate, while the 1990 model has the lowest at 69%. The 1998 sits between the two at 70%.

BMW 525 by Year

Year	Pass Rate	Tests	Avg Mileage
2017	76%	37	63,347 mi
2016	91%	426	92,921 mi
2015	89%	881	98,550 mi
2014	89%	813	108,795 mi
2013	84%	448	116,973 mi
2012	82%	669	119,797 mi
2011	87%	1,652	127,862 mi
2010	86%	1,697	129,103 mi
2009	85%	2,283	138,274 mi
2008	82%	2,974	147,855 mi
2007	81%	3,218	153,182 mi
2006	81%	2,842	152,320 mi
2005	80%	3,057	158,580 mi
2004	77%	1,980	146,538 mi
2003	76%	1,425	139,542 mi
2002	79%	1,357	140,217 mi
2001	76%	894	138,556 mi
2000	70%	161	134,867 mi
1998	70%	33	153,429 mi
1997	86%	49	127,831 mi
1996	78%	206	143,832 mi
1995	80%	363	147,789 mi
1994	78%	280	142,062 mi
1993	82%	137	142,304 mi
1992	76%	100	130,213 mi
1991	78%	74	120,250 mi
1990	69%	70	128,725 mi

Similar Cars to Consider

VOLKSWAGEN TRANSPORTER

1999 · 2461cc Diesel

£2,050/year

70%

same

LAND ROVER DEFENDER

1997 · 2500cc Diesel

£2,050/year

76%

+6%

LAND ROVER DISCOVERY

1999 · 2487cc Diesel

£2,050/year

75%

+5%

FORD TRANSIT

1998 · 2496cc Diesel

£2,050/year

72%

+2%

Check a Specific Bmw 525

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About the 1998 BMW 525

The 1998 BMW 525 is a premium with a 2498cc diesel engine. 33 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 80% of 1998 cars for MOT pass rates.

With an average of 153,429 miles at 28 years old, BMW 525 owners tend to use this car less than the typical driver.

1998 BMW 525 Fuel Costs

The 2498cc 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 1998 BMW 525?

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.

BMW 525 Reliability Trend

Newer BMW 525s show better MOT pass rates than older ones, with an average improvement of 8 percentage points.

Buying a Used 1998 BMW 525

At 28 years old, the BMW 525 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 2016 model has the highest pass rate at 91%. Note: with only 33 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 1998 BMW 525'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 153k 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.

Engine Mounts

Medium risk

Worn 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 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 1998 BMW 525 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
BMW 525(1998)	70%	£1245	£395	Grp 25-38	£2195
VOLKSWAGEN TRANSPORTER(1999)	70%	£1245	£250	Grp 25-38	£2050-£145
LAND ROVER DEFENDER(1997)	76%	£1245	£250	Grp 25-38	£2050-£145
LAND ROVER DISCOVERY(1999)	75%	£1245	£250	Grp 25-38	£2050-£145
FORD TRANSIT(1998)	72%	£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.