Bentley Eight
Reliability, running costs, and MOT data across 3 years from 220 real MOT tests.
Avg Pass Rate
86%
Total Tests
220
Best Year
1992 (100%)
Years Covered
3
About the Bentley Eight
The Bentley Eight has been tested 220 times in 2026 MOT data across 3 model years (1990 to 1992), with an average pass rate of 86%. That's slightly above the national average of 82%. Available as petrol.
Best and Worst Years
The 1992 model is the most reliable with a 100% pass rate from 68 tests. The 1990 model has the lowest at 66%. With a 34 point spread, choosing the right year makes a big difference to reliability.
Reliability Trend
Newer BENTLEY EIGHTs show better MOT pass rates than older ones, with an average improvement of 30 percentage points.
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
Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.
Full 1992 detailsHow reliable is the Bentley Eight?
Bentley Eight by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Bentley Eight Guides & Articles
Cheapest Cars to Run in 2026: Real Data from 19.8 Million MOT Tests
9 min read
Reliability20 Most Reliable Used Cars UK 2026: Real MOT Pass Rate Rankings
10 min read
ReliabilityMost Reliable Used Cars UK 2026 (Data From 50M Real MOT Tests)
11 min read
Buying GuideFord Fiesta Common Problems (2026): What to Check Before Buying
13 min read
ReliabilityFord Puma Problems: 7 Issues Owners Report (2026)
13 min read
Checking a specific Bentley Eight?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.