BMW 8 Series

Reliability, estimated running costs, and MOT data across 5 model years from 5,690 MOT tests in 2024.

Avg Pass Rate

93%

Total Tests

5,690

Highest Pass Rate

2018 (94%)

Years Covered

About the BMW 8 Series

The BMW 8 Series was MOT tested 5,690 times in 2024 (DVSA data, retests included) across 5 model years (2018 to 2022), with an average pass rate of 93%. That's comfortably above the average of 82% across all models in our data. Our records list diesel and petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2018 model has the highest pass rate at 94% from 659 tests. The 2021 model has the lowest at 92%. With just a 2 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.

Reliability Trend

The BMW 8 Series has maintained consistent MOT pass rates across model years, varying by only 1 percentage point.

Mileage Across Years

The oldest model in our data (2018) averages 42,474 miles, while the newest (2022) averages 13,258 miles.

Compared to the BMW brand average of 88%, the 8 Series performs 5 points better, making it one of the more reliable options in the BMW range.

Estimated Running Costs

Fuel (Petrol, 4000cc)

£1,958

Road Tax

£200

MOT Test

£55

Predicted Repairs

£200

Total per year£2,413

Per month£201/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2022 details

How reliable is the BMW 8 Series?

vs average of all models+11% (82% avg)

vs BMW brand average+5% (88% avg)

Best to worst year spread2 percentage points

Reliability trendStable over years

BMW 8 Series by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

Year	Pass Rate	Tests	Avg Mileage
2022	93%	30	13,258 mi
2021	92%	325	28,831 mi
2020	93%	1,213	32,628 mi
2019	92%	3,463	36,578 mi
2018	94%	659	42,474 mi

Questions about the BMW 8 Series

Is the BMW 8 Series reliable?

Across its 5 model years in our data (2018 to 2022), the BMW 8 Series averages a 93% MOT pass rate, from 5,690 tests (DVSA MOT data for tests in 2024, retests included). That's 11 points above the average of 82% across all models in the same data. The 2018 model has the highest pass rate of the years with at least 100 tests, at 94%.

Which year BMW 8 Series has the best MOT pass rate?

Of the years with at least 100 tests, the 2018 BMW 8 Series has the highest MOT pass rate at 94%, while the 2021 model has the lowest at 92%, a 2 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.