Is the 1998 BMW Z3 reliable?

Average reliability. Expect some repairs as it ages. 77% of BMW Z3s from 1998 passed their MOT first time in 2026, based on 8,057 tests. That's 5 points below the national average of 82%.

How much does a 1998 BMW Z3 cost to run?

Estimated annual running cost is £2,577 (£215/month), including £1592 fuel, £430 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 1998 BMW Z3?

The 1998 BMW Z3 has a 77% MOT pass rate based on 8,057 tests in 2026. This ranks 129 out of 340 cars from 1998.

Which year BMW Z3 is most reliable?

The 2002 BMW Z3 has the highest MOT pass rate at 83%. The least reliable year is 1997 at 75%.

BMW Z3 (1998)

Q: What is the average mileage for a 1998 BMW Z3?

The average mileage for a 1998 BMW Z3 is 87,787 miles, which is significantly below the expected 207,200 miles for a 28-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

Running costs, reliability data, and common problems from 8,057 real MOT tests.

Annual Cost

£2,577

£215/month

MOT Pass Rate

77%

Average

Road Tax

£430

Based on CC/year

Insurance

Grp 30-42

2800cc Petrol

Check Carefully

77% pass rate, £2577/year to run. 5 points below average.

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Petrol2800cc28 years old8,057 tests88k miles avg

Annual Running Costs

Fuel (Petrol, 2800cc)

~30 mpg

£1,592

Road Tax

Based on 2800cc

£430

MOT Test

£55

Predicted Repairs

£500

Total per year£2,577

Per month£215/mo

Per week£50/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

77% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the BMW brand average of 88%.

At 28 years old, 77% of BMW Z3s from 1998 passed their MOT first time in 2026. That's based on 8,057 tests across the UK. The average mileage at this age is 87,787 miles.

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How Does It Compare?

Rank among 1998 cars129th of 340(top 38%)

Rank among BMW models1442th of 1,564(top 92%)

vs national average-5%(82% avg)

vs 1998 cars average+2%(75% avg)

vs BMW average-11%(88% avg)

Mileage Analysis

87,787

Average miles

207,200

Expected for age

The average 1998 BMW Z3 has 87,787 miles on the clock, which is significantly below the expected 207,200 miles for a 28-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

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Best Year to Buy?

The most reliable year is the 2002 model with a 83% MOT pass rate, while the 1997 model has the lowest at 75%. The 1998 sits between the two at 77%.

BMW Z3 by Year

Year	Pass Rate	Tests	Avg Mileage
2011	90%	31	39,105 mi
2003	81%	138	74,358 mi
2002	83%	2,094	78,100 mi
2001	80%	3,147	81,138 mi
2000	79%	3,462	85,606 mi
1999	78%	8,191	89,294 mi
1998	77%	8,057	87,787 mi
1997	75%	5,268	93,349 mi
1996	63%	30	96,619 mi

Similar Cars to Consider

VOLKSWAGEN TRANSPORTER

1996 · 2490cc Petrol

£2,597/year

67%

-10%

BMW 3 SERIES

1999 · 2494cc Petrol

£2,397/year

78%

+1%

PORSCHE BOXSTER

2000 · 2700cc Petrol

£2,247/year

82%

+5%

MERCEDES C

1999 · 2799cc Petrol

£2,247/year

82%

+5%

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About the 1998 BMW Z3

The 1998 BMW Z3 is a premium performance with a 2800cc petrol engine. 8,057 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 1998, the average MOT pass rate is 75%, and this model beats that benchmark.

With an average of 87,787 miles at 28 years old, BMW Z3 owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.

1998 BMW Z3 Fuel Costs

The 2800cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 1998 BMW Z3?

Total estimated annual running cost is £2,577 (£215/month), broken down as £1592 fuel, £430 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 77% pass rate. Keeping on top of servicing will help avoid surprises.

BMW Z3 Reliability Trend

Newer BMW Z3s show better MOT pass rates than older ones, with an average improvement of 4 percentage points.

Buying a Used 1998 BMW Z3

At 28 years old, the BMW Z3 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 2002 model has the highest pass rate at 83%. With 8,057 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 1998 BMW Z3's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 28 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

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

Medium risk

With an average of 88k 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 1998 BMW Z3 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
BMW Z3(1998)	77%	£1592	£430	Grp 30-42	£2577
VOLKSWAGEN TRANSPORTER(1996)	67%	£1592	£250	Grp 25-38	£2597+£20
BMW 3 SERIES(1999)	78%	£1592	£250	Grp 25-38	£2397-£180
PORSCHE BOXSTER(2000)	82%	£1592	£250	Grp 30-42	£2247-£330
MERCEDES C(1999)	82%	£1592	£250	Grp 30-42	£2247-£330

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.