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ONK 911L

1973 Triumph Stag

Red Petrol 2997cc
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MOT Status

Expired
Expires9 Apr 2026
Tests19 (13 pass, 6 fail)
Pass rate68.4%

Mileage

4,686 mi
Last recorded4,686 miles
Recorded on10 Apr 2025
Typical for 1973 Triumph Stag53,671 mi

Below or average mileage for this year

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

RegistrationONK 911L
MakeTriumph
ModelStag
Year1973
ColourRed
Fuel typePetrol
Engine2,997cc

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

13 pass 6 fail
Pass 10 Apr 2025 4,686 miles

Offside Front Wheel bearing has slight play (5.1.3 (a) (i))

Oil leak, but not excessive engine & gearbox & rear differential (8.4.1 (a) (i))

Rear Coil spring corroded NS & OS (5.3.1 (b) (i))

Fail 11 Dec 2024 4,670 miles

All direction indicators not working n/s & o/s (4.4.1 (a) (ii))

Front passenger door cannot be opened from outside the vehicle (6.2.3 (a))

Front Registration plate deteriorated but not likely to be misread (0.1 (b))

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

Oil leak, but not excessive propshaft speedometer cable housing (8.4.1 (a) (i))

Rear Coil spring corroded n/s & o/s (5.3.1 (b) (i))

Rear Vehicle structure or chassis corroded within 30cm of a mounting, but not seriously affecting overall security n/s & o/s chassis (6.2.2 (d) (i))

Windscreen wiper blade defective Both (3.4 (b) (i))

hazard lights only working on o/s

Fail 2 Sep 2024 4,620 miles

Nearside Front Front passenger door cannot be opened from outside the vehicle (6.2.3 (a))

Nearside Front Suspension component mounting prescribed area excessively corroded significantly reducing structural strength chassis rail (5.3.6 (a) (i))

Front Registration plate deteriorated but not likely to be misread (0.1 (b))

Offside Front Wheel bearing has slight play (5.1.3 (a) (i))

Offside Rear Service brake fluctuating, but not excessively close to excessive (1.2.1 (e))

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

Oil leak, but not excessive from gearbox, onto exhaust, close to excessive (8.4.1 (a) (i))

Pass 29 Mar 2018 1,158 miles

Nearside Steering rack gaiter deteriorated (2.2.D.2d)

Offside Steering rack gaiter deteriorated (2.2.D.2d)

Pass 12 Apr 2017 99 miles
Pass 4 Apr 2016 99,218 miles
Pass 4 Apr 2015 98,150 miles

Offside Inner Track rod end ball joint has slight play (2.2.B.1f)

Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Offside Steering rack gaiter deteriorated (2.2.D.2d)

Oil leak

surface corrosion to underside of vehicle

Pass 3 Jun 2014 98,123 miles

Oil leak

Play in steering rack inner joint(s)

Fail 2 Jun 2014 98,120 miles

Offside Front Seat belt locking mechanism does not secure or release (5.2.5a)

Windscreen washer provides insufficient washer liquid (8.2.3)

Play in steering rack inner joint(s)

Oil leak

Pass 17 May 2012 97,932 miles
Fail 16 May 2012 97,929 miles

Nearside Front Suspension component mounting prescribed area is excessively corroded (2.4.A.3)

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

Windscreen washer provides insufficient washer liquid (8.2.3)

Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.5b)

Offside Parking brake: parking brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)

Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Oil leak

Play in steering rack inner joint(s)

Power steering pipe(s) or hose(s) has slight seepage from a joint (2.3.3b)

Rear coil spring corroded (2.4.C.1b)

Pass 19 May 2011 97,870 miles

Oil leak

Steering column top bearing slightly worn (2.1.2c)

offside tyre cracking on tread

Fail 6 May 2011 97,712 miles

Nearside Rear wheel bearing rough when rotated (2.6.1)

Oil leak

Steering column top bearing slightly worn (2.1.2c)

offside tyre cracking on tread

Pass 4 May 2010 97,044 miles
Pass 30 Apr 2009 95,997 miles

Offside Inner Ball joint has slight play (2.2.B.1f)

Vehicle structure has slight corrosion (6.1.A.1)

offside front floorpan excessively corroded but not within pescribed areas

Pass 10 Apr 2008 95,458 miles

slight play in steering rack

Fail 10 Mar 2008 95,412 miles

Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings (6.1.B.2)

slight play in steering rack

Pass 31 Jan 2007 94,042 miles
Pass 21 Mar 2006 94,010 miles

How Reliable is the Triumph Stag?

Based on 64,590 MOT tests across 6,070 vehicles.

77.5%
Pass Rate
417
Miles/Year
56
Year Lifespan
6,070
On UK Roads

Top MOT Failure Points

Windscreen washer provides insufficient washer liquid 2,039
Parking brake: efficiency below requirements 1,744
Suspension component mounting prescribed area is excessively corroded 1,507
Stop lamp not working 1,283
brake binding 1,269
Full Triumph Stag reliability report

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ONK 911L is a 1973 Triumph Stag in Red with a 2,997cc petrol engine. This vehicle has been through 19 MOT tests with a personal pass rate of 68.4%.

Across all 1973 Triumph Stag models, the average MOT pass rate is 77.9% with a typical mileage of 53,671 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 Triumph Stag fails its MOT is windscreen washer provides insufficient washer liquid, accounting for 2,039 recorded failures. If you're considering buying ONK 911L, it's worth having these areas checked by a mechanic before committing.

The Triumph Stag typically stays on UK roads for around 56 years. At 53 years old, this Triumph Stag is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of ONK 911L?

You can check the full history of ONK 911L by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was ONK 911L registered?

ONK 911L is a 1973 Triumph Stag, first registered on 8 May 1973.

Is ONK 911L safe to buy?

The MOT history for ONK 911L shows 19 tests with a 68.4% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does ONK 911L 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 ONK 911L. 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.