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B831 FOG

1985 Bentley Mulsanne

Blue Petrol 6750cc
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MOT Status

Valid
Expires10 Dec 2026
Tests21 (20 pass, 1 fail)
Pass rate95.2%

Mileage

30,581 mi
Last recorded30,581 miles
Recorded on11 Dec 2025
Typical for 1985 Bentley Mulsanne89,788 mi

Below or average mileage for this year

4 checks still locked for this Bentley
Stolen
Finance
Write-off
Keepers
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Vehicle Details

RegistrationB831 FOG
MakeBentley
ModelMulsanne
Year1985
ColourBlue
Fuel typePetrol
Engine6,750cc

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50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

20 pass 1 fail
Pass 11 Dec 2025 30,581 miles
Pass 6 Aug 2024 30,358 miles

Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Power steering component has slight seepage from a component (2.1.5 (a))

Fail 5 Aug 2024 30,358 miles

Offside Front Steering arm fractured (2.1.3 (c) (i))

Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Power steering component has slight seepage from a component (2.1.5 (a))

Pass 11 Aug 2023 30,002 miles
Pass 11 Aug 2022 29,532 miles
Pass 4 Aug 2021 29,154 miles
Pass 18 Aug 2020 28,537 miles
Pass 13 Jul 2019 27,517 miles
Pass 3 Jul 2018 26,791 miles
Pass 28 Jun 2017 26,025 miles
Pass 6 Jul 2016 25,268 miles
Pass 11 Jul 2015 24,672 miles
Pass 4 Jul 2014 23,862 miles
Pass 12 Jul 2013 23,588 miles
Pass 29 Jun 2012 23,164 miles
Pass 11 Jul 2011 22,729 miles
Pass 23 Jul 2010 22,268 miles
Pass 26 May 2009 21,566 miles
Pass 29 May 2008 20,169 miles

n/s/r tyre close to minimum limit

Pass 18 Jun 2007 19,359 miles
Pass 25 May 2006 19,215 miles

How Reliable is the Bentley Mulsanne?

Based on 15,955 MOT tests across 1,697 vehicles.

85.5%
Pass Rate
1,137
Miles/Year
45
Year Lifespan
1,697
On UK Roads

Top MOT Failure Points

Parking brake: efficiency below requirements 628
parking brake recording little or no effort 292
Brake pipe excessively corroded 141
Windscreen wiper does not clear the windscreen effectively 123
position lamp(s) not working 113
Full Bentley Mulsanne reliability report

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B831 FOG is a 1985 Bentley Mulsanne in Blue with a 6,750cc petrol engine. This vehicle has been through 21 MOT tests with a personal pass rate of 95.2%.

Across all 1985 Bentley Mulsanne models, the average MOT pass rate is 79.0% with a typical mileage of 89,788 miles. This particular vehicle has performed better than the average for its year.

The most common reason a Bentley Mulsanne fails its MOT is parking brake: efficiency below requirements, accounting for 628 recorded failures. If you're considering buying B831 FOG, it's worth having these areas checked by a mechanic before committing.

The Bentley Mulsanne typically stays on UK roads for around 45 years. At 41 years old, this Bentley Mulsanne is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of B831 FOG?

You can check the full history of B831 FOG by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was B831 FOG registered?

B831 FOG is a 1985 Bentley Mulsanne, first registered on 1 June 1985.

Is B831 FOG safe to buy?

The MOT history for B831 FOG shows 21 tests with a 95.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does B831 FOG have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on B831 FOG. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.