Bentley Common Problems & Known Faults

How reliable are Bentley cars?

Our database covers 3 Bentley models and 15 documented faults across the range. Of these, 4 are classified as dangerous and a further 9 as major. Dangerous faults are those that can compromise vehicle safety or lead to complete mechanical failure if left unaddressed.

According to DVSA MOT test data, Bentley models fail at an average rate of 11.0%, sitting below the 22.7% average across all manufacturers in our database. Reliability varies considerably between models. The Continental is the strongest performer at just 9.2%, while the Arnage has the highest failure rate at 12.8%.

If you are considering a used Bentley, researching the specific model and generation you are looking at makes a real difference. The most common failure areas across the range are suspension and brakes, though each model has its own particular weak points. This page gives you a complete breakdown by severity, the models affected, and what repairs typically cost at UK garages.

Bentley reliability summary

Where Bentley problems occur

Understanding which systems are most prone to failure helps you focus during a test drive or pre-purchase inspection. Here is how Bentley's 15 known issues break down by area.

Suspension problems dominate, accounting for 6 of the 15 faults we track (40%). Issues in this area include Suspension joint dust cover deterioration and Shock absorber bush wear. The most affected models are the Arnage (3), the Continental (2), the Turbo (1).

Brakes is the next most common area, with 3 documented faults (20%). Common faults here include Brake pipe corrosion and Parking brake control system failure. The most affected models are the Arnage (1), the Continental (1), the Turbo (1).

We also track 3 engine faults across the range (20%). Problems to watch for include Engine management light and emissions system faults and Fluid leaks from engine and transmission. The most affected models are the Continental (2), the Turbo (1).

Steering rounds out the top problem areas with 2 known issues (13%). Notable issues include Power steering system malfunction (6.75 V8) and Power steering malfunction (T-Series). The most affected models are the Arnage (1), the Turbo (1).

Known Bentley faults by severity

Every fault in our database is rated by severity based on its potential safety impact and typical repair cost. Below is a sample of issues at each level, with links to the affected model pages where you can read the full details.

Top issues across the Bentley range

The most common and severe problems found across all Bentley models, ranked by severity and how many models are affected.

Problems by Bentley model

We track faults across 3 Bentley models. Each model page includes every known issue, generation-specific details, UK repair costs, and MOT failure data. Select a model below to see its full breakdown.

What to check before buying a used Bentley

Every used Bentley deserves a thorough inspection, but knowing the common weak points for your target model gives you a serious advantage. Since suspension faults are the most common across the range, pay particular attention to this area during any viewing or test drive.

The 4 dangerous-rated faults deserve special attention. These include Brake pipe corrosion, Spring component failure (6.75 V8), Wheel bearing failure with excessive play. Any of these can compromise safety or result in repair bills running well into the thousands.

A complete dealer service history is one of the strongest indicators of how well a Bentley has been looked after. Many of the faults on this page are preventable or can be caught early through regular servicing. If the seller cannot produce service records, treat that as a significant red flag.

Check the MOT history carefully too. With a 11.0% average failure rate across the Bentley range, some advisories and minor failures are normal over the life of any car. What matters is the pattern: recurring failures in the same area suggest an underlying problem, while a history of clean passes is encouraging.

Bentley repair costs: what to expect

Across all documented faults, the average Bentley repair costs between £442 and £1,046 at an independent garage. At the top end, the most expensive single repair can reach £3,000 or more. Main dealer rates are typically 30% to 50% higher across the board.

The single most expensive Bentley repair in our database is Subframe structural corrosion (T-Series), which can cost £3,000–£7,000 at a main dealer.

These figures are based on reported UK repair costs and serve as a guide. Actual prices will vary depending on your location, the garage, and the parts required. Getting quotes from two or three specialists before committing to any major work is always worthwhile.