CarCostCheck

BENTLEY MULSANNE (1991)

Running costs, common problems, and reliability data based on 66 real MOT tests in 2024.

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MOT Pass Rate

86%

Total Tests (2024)

66

Avg Mileage

83,012 mi

Est. Annual Cost

£2,247

Is the 1991 BENTLEY MULSANNE reliable?

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the BENTLEY brand average of 94%.

At 33 years old, 86% of BENTLEY MULSANNEs from 1991 passed their MOT first time in 2024. That's based on 66 tests across the UK. The average mileage at this age is 83,012 miles.

How does the 1991 BENTLEY MULSANNE compare?

Rank among all 1991 cars53th out of 179(top 30%)
Rank among all BENTLEY models106th out of 117(top 91%)
vs national average+4% (82% avg)
vs 1991 cars average+8% (78% avg)
vs BENTLEY average-8% (94% avg)

Mileage Analysis

The average 1991 BENTLEY MULSANNE has 83,012 miles on the clock, which is significantly below the expected 244,200 miles for a 33-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.

Best year to buy a BENTLEY MULSANNE?

The most reliable year is the 2018 model with a 100% MOT pass rate, while the 1991 model has the lowest at 86%. Consider a different year if reliability is a priority.

How much does a 1991 BENTLEY MULSANNE cost to run?

⛽Fuel (Petrol, 6750cc)
£1,592
🏛️Road Tax
£250
🔧MOT Test
£55
🛠️Predicted Repairs
£350
Total per year£2,247
Per month£187/mo

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.

BENTLEY MULSANNE by Year

YearPass RateTestsAvg Mileage
202196%549,124 mi
202099%7612,990 mi
201998%19721,125 mi
2018100%9527,069 mi
201799%29722,331 mi
201698%33527,325 mi
201595%24928,860 mi
201499%23741,306 mi
201398%17535,886 mi
201296%20343,144 mi
201193%28347,470 mi
2010100%8660,646 mi
199186%6683,012 mi
199088%13878,194 mi

Checking a specific BENTLEY MULSANNE?

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About the 1991 BENTLEY MULSANNE

The 1991 BENTLEY MULSANNE is a luxury with a 6750cc petrol engine. 66 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 1991, the average MOT pass rate is 78%, and this model beats that benchmark.

With an average of 83,012 miles at 33 years old, BENTLEY MULSANNE 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.

1991 BENTLEY MULSANNE Fuel Costs

The 6750cc 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 1991 BENTLEY MULSANNE?

Total estimated annual running cost is £2,247 (£187/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 86% pass rate. Keeping on top of servicing will help avoid surprises.

BENTLEY MULSANNE Reliability Trend

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

Buying a Used 1991 BENTLEY MULSANNE

At 33 years old, the BENTLEY MULSANNE 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. Note: with only 66 tests in our data, these figures should be treated as indicative rather than definitive.

Alternatives to the 1991 BENTLEY MULSANNE

If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines: