CarCostCheck

Bentley Eight

Reliability, estimated running costs, and MOT data across 3 model years from 220 MOT tests in 2024.

Avg Pass Rate

86%

Total Tests

220

Model Years

1990 to 1992

Years Covered

3

About the Bentley Eight

The Bentley Eight was MOT tested 220 times in 2024 (DVSA data, retests included) across 3 model years (1990 to 1992), with an average pass rate of 86%. That's slightly above the average of 82% across all models in our data. Our records list petrol versions.

Mileage Across Years

The oldest model in our data (1990) averages 84,204 miles, while the newest (1992) averages 54,272 miles.

Compared to the Bentley brand average of 94%, the Eight is 8 points lower, placing it among the less reliable Bentley models.

Estimated Running Costs

Fuel (Petrol, 6750cc)
£1,958
Road Tax
£375
MOT Test
£55
Predicted Repairs
£200
Total per year£2,588
Per month£216/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 1992 details

How reliable is the Bentley Eight?

vs average of all models+4% (82% avg)
vs Bentley brand average-8% (94% avg)

Bentley Eight by Year

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

YearPass RateTestsAvg Mileage
1992100%6854,272 mi
199191%5465,593 mi
199066%9884,204 mi

Questions about the Bentley Eight

Is the Bentley Eight reliable?

Across its 3 model years in our data (1990 to 1992), the Bentley Eight averages an 86% MOT pass rate, from 220 tests (DVSA MOT data for tests in 2024, retests included). That's 4 points above the average of 82% across all models in the same data.

Bentley Eight Guides & Articles

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