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BON 39K

1971 MG B

Green Petrol 1800cc
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MOT Status

Valid
Expires2 Sep 2026
Tests12 (9 pass, 3 fail)
Pass rate75%

Mileage

52,582 mi
Last recorded52,582 miles
Recorded on3 Sep 2025
Typical for 1971 MG B35,468 mi

Significantly above average — investigate

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

RegistrationBON 39K
MakeMG
ModelB
Year1971
ColourGreen
Fuel typePetrol
Engine1,800cc

All premium checks include

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

9 pass 3 fail
Pass 3 Sep 2025 52,582 miles
Pass 21 Aug 2024 51,569 miles
Pass 24 Aug 2023 49,594 miles

Front Drive shaft joint worn, but not excessively (6.1.7 (c) (i))

Fail 17 Aug 2023 49,540 miles

Brake lever has insufficient reserve travel (1.1.2 (a))

Parking (secondary brake) on a single line braking system imbalanced across an axle Axle 1 (1.3.1 (b) (i))

Rear Brakes imbalanced across an axle Axle 2 (1.2.1 (b) (i))

Service brake efficiency below requirements (1.2.2 (a) (i))

Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) DANGEROUS

Coolant leak ()

Front Drive shaft joint worn, but not excessively (6.1.7 (c) (i))

Pass 12 Aug 2022 48,298 miles
Pass 19 May 2009 47,649 miles

Front brakes slightly binding

Slight play on both front anti-roll bar 'D' bushes

Slight play on nearside front top trunion

Slight play on offside front wheel bearing

Fail 18 May 2009 47,649 miles

Headlamp switch faulty (1.7.1)

Rear Exhaust system not adequately supported (7.1.1)

Front brakes slightly binding

Slight play on both front anti-roll bar 'D' bushes

Slight play on nearside front top trunion

Slight play on offside front wheel bearing

Pass 9 May 2008 56,999 miles

fuel pipe slightly corrored

head lamp switch sticks

top n/s shock rubber bushes perished

Fail 28 Apr 2008 46,995 miles

Nearside Front Steering rack gaiter split (2.2.D.2d)

Nearside Front Tyre has a bulge, caused by separation or partial failure of its structure (4.1.D.1b)

Rear Stop lamp not working (1.2.1b)

fuel pipe slightly corrored

head lamp switch sticks

top n/s shock rubber bushes perished

Pass 18 Apr 2007 46,922 miles

welding on cascle rales poorley done

Pass 24 Apr 2006 46,705 miles
Pass 26 Apr 2005 43,935 miles

How Reliable is the MG B?

Based on 191,608 MOT tests across 19,443 vehicles.

78.1%
Pass Rate
381
Miles/Year
63
Year Lifespan
19,443
On UK Roads

Top MOT Failure Points

Windscreen washer provides insufficient washer liquid 5,224
brake binding 4,089
Parking brake: efficiency below requirements 3,715
Stop lamp not working 3,343
Steering rack gaiter split 2,887
Full MG B reliability report

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BON 39K is a 1971 MG B in Green with a 1,800cc petrol engine. This vehicle has been through 12 MOT tests with a personal pass rate of 75%.

Across all 1971 MG B models, the average MOT pass rate is 79.3% with a typical mileage of 35,468 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

The most common reason a MG B fails its MOT is windscreen washer provides insufficient washer liquid, accounting for 5,224 recorded failures. If you're considering buying BON 39K, it's worth having these areas checked by a mechanic before committing.

The MG B typically stays on UK roads for around 63 years. At 55 years old, this MG B is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of BON 39K?

You can check the full history of BON 39K by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was BON 39K registered?

BON 39K is a 1971 MG B, first registered on 17 November 1971.

Is BON 39K safe to buy?

The MOT history for BON 39K shows 12 tests with a 75% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does BON 39K 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 BON 39K. 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.