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BYE 831T

1979 Austin Morris Mini 850

Blue Petrol 848cc
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MOT Status

Expired
Expires27 Apr 2024
Tests8 (4 pass, 4 fail)
Pass rate50%

Mileage

87,515 mi
Last recorded87,515 miles
Recorded on28 Apr 2026
Typical for 1979 Austin Morris Mini 85059,640 mi

Significantly above average — investigate

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Vehicle Details

RegistrationBYE 831T
MakeAustin Morris
ModelMini 850
Year1979
ColourBlue
Fuel typePetrol
Engine848cc

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

4 pass 4 fail
Fail 28 Apr 2026 87,515 miles

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

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

Nearside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) DANGEROUS

Offside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) DANGEROUS

Nearside Front Shock absorbers has light misting of oil (5.3.2 (b))

Nearside Front Upper Suspension arm ball joint has slight play (5.3.4 (a) (i))

Nearside Rear Subframe mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Front Subframe mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Front Upper Suspension arm ball joint has slight play (5.3.4 (a) (i))

Offside Rear Subframe mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Rear Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Oil leak, but not excessive (8.4.1 (a) (i))

Pass 11 Apr 2023 86,816 miles

Front Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))

Nearside Front Upper Suspension arm ball joint has slight play (5.3.4 (a) (i))

Nearside Rear Subframe mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Front Subframe mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Front Upper Suspension arm ball joint has slight play (5.3.4 (a) (i))

Offside Rear Subframe mounting prescribed area is corroded but not considered excessive (5.3.6 (a) (i))

Offside Rear Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Oil leak, but not excessive (8.4.1 (a) (i))

Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))

Pass 28 Apr 2022 86,759 miles

All direction indicators flashing less than 60 times a minute (4.4.4 (a))

Engine has a rattling from engine ( timing chain wear suspected)

Front Suspension component mounting prescribed area is corroded but not considered excessive front subframe unit has general mild corrosion (5.3.6 (a) (i))

Indicator tell-tale inoperative left & right (4.9.1 (a) (i))

Nearside door mirror glass missing

Oil leak, but not excessive engine/ transmission oil leaking (sump plug & gearchange seal leaking) (8.4.1 (a) (i))

Rear Suspension component mounting prescribed area is corroded but not considered excessive rear subframe unit has general mild corrosion (5.3.6 (a) (i))

Fail 12 Apr 2022 86,759 miles

Nearside Front Suspension component ball joint dust cover no longer prevents the ingress of dirt upper & lower (5.3.4 (b) (ii))

Nearside Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

Offside Front Suspension component ball joint dust cover no longer prevents the ingress of dirt upper & lower (5.3.4 (b) (ii))

Offside Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

Registration plate lamp does not illuminate simultaneously with the position lamps (4.7.2 (a))

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

Nearside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) DANGEROUS

Offside Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) DANGEROUS

All direction indicators flashing less than 60 times a minute (4.4.4 (a))

BATTERY in poor condition

Engine has a rattling from engine ( timing chain wear suspected)

Front Suspension component mounting prescribed area is corroded but not considered excessive front subframe unit has general mild corrosion (5.3.6 (a) (i))

Indicator tell-tale inoperative left & right (4.9.1 (a) (i))

Nearside door mirror glass missing

Oil leak, but not excessive engine/ transmission oil leaking (sump plug & gearchange seal leaking) (8.4.1 (a) (i))

Rear Suspension component mounting prescribed area is corroded but not considered excessive rear subframe unit has general mild corrosion (5.3.6 (a) (i))

Pass 1 Nov 2018 86,749 miles
Pass 13 May 2010 85,136 miles
Fail 11 May 2010 85,136 miles

Nearside Front suspension has excessive play in a lower suspension ball joint (2.5.B.1a)

Nearside Front suspension has excessive play in a upper suspension ball joint (2.5.B.1a)

Nearside Rear Bonded suspension unit attachment loose (2.4.F.1a)

Offside Front suspension has excessive play in a lower suspension ball joint (2.5.B.1a)

Offside Front suspension has excessive play in a upper suspension ball joint (2.5.B.1a)

Offside Front wheel bearing has excessive play (2.5.A.3c)

Offside Rear Bonded suspension unit attachment loose (2.4.F.1a)

Fail 10 Oct 2009 85,135 miles

Brakes imbalanced across an axle (3.7.B.5b)

Exhaust emissions carbon monoxide content excessive (7.3.B.1a)

Hazard warning tell tale not working correctly (1.4.B.1e)

Horn not working (1.6.2a)

Nearside Front Brake hose excessively deteriorated (3.6.B.4d)

Nearside Headlamp aim aimed so that it dazzles other road users (1.8.A.1a)

Nearside Steering arm has relative movement at its fixings (2.2.B.1h)

Nearside front brake binding (3.7.B.1)

Offside Front Subframe mounting prescribed area is excessively corroded (2.4.A.3)

Offside Front constant velocity joint gaiter split (2.5.C.1a)

Nearside Front Rear wheel bearing has slight play (2.6.2)

Nearside Front constant velocity joint gaiter deteriorated (2.5.C.1a)

Nearside Rear Radius arm has slight play in a pin/bush (2.4.G.2)

Offside Rear Radius arm has slight play in a pin/bush (2.4.G.2)

Rear Brake pipe slightly corroded (3.6.B.2c)

all suspension bushes perished none with excess movement

nearside door mirror cracked

nearside rear tyre perished

How Reliable is the Austin Morris Mini 850?

Based on 1,217 MOT tests across 178 vehicles.

68.9%
Pass Rate
343
Miles/Year
48
Year Lifespan
178
On UK Roads

Top MOT Failure Points

Subframe mounting prescribed area is excessively corroded 101
Windscreen washer provides insufficient washer liquid 69
Parking brake: efficiency below requirements 59
brake recording little or no effort 56
Exhaust emissions carbon monoxide content excessive 46
Full Austin Morris Mini 850 reliability report

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BYE 831T is a 1979 Austin Morris Mini 850 in Blue with a 848cc petrol engine. This vehicle has been through 8 MOT tests with a personal pass rate of 50%.

Across all 1979 Austin Morris Mini 850 models, the average MOT pass rate is 69.4% with a typical mileage of 59,640 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 Austin Morris Mini 850 fails its MOT is subframe mounting prescribed area is excessively corroded, accounting for 101 recorded failures. If you're considering buying BYE 831T, it's worth having these areas checked by a mechanic before committing.

The Austin Morris Mini 850 typically stays on UK roads for around 48 years. At 47 years old, this Austin Morris Mini 850 is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of BYE 831T?

You can check the full history of BYE 831T by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was BYE 831T registered?

BYE 831T is a 1979 Austin Morris Mini 850, first registered on 31 May 1979.

Is BYE 831T safe to buy?

The MOT history for BYE 831T shows 8 tests with a 50% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does BYE 831T 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 BYE 831T. 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.