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TNM 678R

1977 MG B

Green Petrol 1798cc
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MOT Status

Valid
Expires31 May 2027
Tests6 (2 pass, 4 fail)
Pass rate33.3%

Mileage

47,769 mi
Last recorded47,769 miles
Recorded on1 Jun 2026
Typical for 1977 MG B40,549 mi

Above average mileage for this year

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

RegistrationTNM 678R
MakeMG
ModelB
Year1977
ColourGreen
Fuel typePetrol
Engine1,798cc

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

2 pass 4 fail
Pass 1 Jun 2026 47,769 miles

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Wheel bearing has slight play (5.1.3 (a) (i))

Nearside track rod end gaiter rubbing on wheel rim

Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Offside Front Brake hose slightly deteriorated (1.1.12 (b) (ii))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Suspension component pin or bush slightly worn king pin (5.3.4 (a) (i))

Rear Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

Rear Exhaust mounting defective (6.1.2 (a))

Fail 29 May 2026 47,769 miles

Nearside Seat belt anchorage loose (7.1.1 (b))

Offside Front Headlamp aim too low (4.1.2 (a))

Offside Seat belt anchorage loose (7.1.1 (b))

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

Windscreen washer not working (3.5 (a))

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

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Wheel bearing has slight play (5.1.3 (a) (i))

Nearside track rod end gaiter rubbing on wheel rim

Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Offside Front Brake hose slightly deteriorated (1.1.12 (b) (ii))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Suspension component pin or bush slightly worn king pin (5.3.4 (a) (i))

Rear Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

Rear Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (1.2.1 (b) (i))

Rear Exhaust mounting defective (6.1.2 (a))

Fail 5 May 2026 47,770 miles

Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))

Front Prop shaft securing bolt loose (6.1.7 (a) (i))

Offside Headlamp aim too low (4.1.2 (a))

Offside Rear Brake pipe excessively corroded (1.1.11 (c))

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 (1.2.1 (b) (i))

Windscreen washer provides insufficient washer liquid (3.5 (a))

Nearside Front Seat belt likely to become detached in the event of a collision (7.1.1 (a) (ii)) DANGEROUS

Offside Front Seat belt likely to become detached in the event of a collision (7.1.1 (a) (ii)) DANGEROUS

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

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Wheel bearing has slight play (5.1.3 (a) (i))

Nearside track rod end gaiter rubbing on wheel rim

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Lower Axle swivel pins and bushes swivel pin and/or bush slightly worn (5.1.2 (b) (i))

Offside Rear Service brake binding but not excessively (1.2.1 (f))

Rear Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

Fail 8 Aug 2025 47,768 miles

Front Prop shaft securing bolt loose (6.1.7 (a) (i))

Offside Headlamp aim too low (4.1.2 (a))

Offside Rear Brake pipe excessively corroded (1.1.11 (c))

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

Windscreen washer provides insufficient washer liquid (3.5 (a))

Nearside Seat belt likely to become detached in the event of a collision (7.1.1 (a) (ii)) DANGEROUS

Offside Seat belt likely to become detached in the event of a collision (7.1.1 (a) (ii)) DANGEROUS

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

Nearside Front Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Front Suspension component pin or bush slightly worn Trunion (5.3.4 (a) (i))

Nearside Headlamp aim too low (4.1.2 (a))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Service brake grabbing slightly

Nearside Rear Wheel bearing has slight play (5.1.3 (a) (i))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Rear Brake hose has slight corrosion to ferrule (1.1.12 (f) (i))

Pass 25 Jun 2014 47,637 miles

Offside Axle swivel joint has slight play (2.5.A.3b)

Offside front tyre slightly perished/cracked

Fail 20 Jun 2014 47,631 miles

Offside Obligatory mirror missing (8.1.1)

Rear Exhaust has a major leak of exhaust gases (7.1.2)

Offside Front Brake hose excessively damaged (3.6.B.4d) DANGEROUS

Offside Axle swivel joint has slight play (2.5.A.3b)

Offside front tyre slightly perished/cracked

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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TNM 678R is a 1977 MG B in Green with a 1,798cc petrol engine. This vehicle has been through 6 MOT tests with a personal pass rate of 33.3%.

Across all 1977 MG B models, the average MOT pass rate is 73.1% with a typical mileage of 40,549 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 TNM 678R, 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 49 years old, this MG B is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of TNM 678R?

You can check the full history of TNM 678R by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was TNM 678R registered?

TNM 678R is a 1977 MG B, first registered on 1 June 1977.

Is TNM 678R safe to buy?

The MOT history for TNM 678R shows 6 tests with a 33.3% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does TNM 678R 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 TNM 678R. 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.