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MMX 428P

1976 Triumph Stag

Blue Petrol 2400cc
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MOT Status

Valid
Expires8 Mar 2027
Tests25 (19 pass, 6 fail)
Pass rate76%

Mileage

82,705 mi
Last recorded82,705 miles
Recorded on5 Mar 2026
Typical for 1976 Triumph Stag57,333 mi

Significantly above average — investigate

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

RegistrationMMX 428P
MakeTriumph
ModelStag
Year1976
ColourBlue
Fuel typePetrol
Engine2,400cc

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

19 pass 6 fail
Pass 5 Mar 2026 82,705 miles
Pass 24 Feb 2025 82,111 miles
Pass 20 Feb 2024 81,454 miles
Pass 23 Feb 2023 80,902 miles
Pass 8 Mar 2022 80,243 miles
Fail 8 Mar 2022 80,233 miles

Offside Rear Service brake excessively binding (1.2.1 (f))

Rear Stop lamp(s) all not working (4.3.1 (a) (iii)) DANGEROUS

Pass 9 Mar 2021 79,606 miles

Front Vehicle structure is corroded but structural rigidity is not significantly reduced lower inner valance corroded (6.1.1 (c) (i))

Offside Front Vehicle structure is deformed but structural rigidity is not significantly reduced sill lip flattened (6.1.1 (a) (i))

Fail 22 Feb 2021 79,538 miles

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

Front Oil leaking excessively from engine (8.4.1 (a) (i))

Front Vehicle structure is corroded but structural rigidity is not significantly reduced lower valance (6.1.1 (c) (i))

Offside Front Vehicle structure is deformed but structural rigidity is not significantly reduced sill lip flattened (6.1.1 (a) (i))

Pass 18 Feb 2020 79,171 miles

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

Offside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

Offside Front Vehicle structure is corroded but structural rigidity is not significantly reduced sill (lip) flattened (6.1.1 (c) (i))

Offside Rear Brake pipe corroded, covered in grease or other material at cylinder (1.1.11 (c))

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

Vehicle structure is corroded but structural rigidity is not significantly reduced front lower valance/inner valance (6.1.1 (c) (i))

Pass 12 Feb 2019 78,423 miles

Front Lower Vehicle structure is corroded but structural rigidity is not significantly reduced valance/inner valance (6.1.1 (c) (i))

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

Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

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

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

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

Pass 14 Feb 2018 77,518 miles
Fail 13 Feb 2018 77,503 miles

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

Pass 21 Feb 2017 76,455 miles
Fail 16 Feb 2017 76,453 miles

Nearside Front Lower Ball joint has excessive play (2.2.B.1f)

Nearside Stop lamp not working (1.2.1b)

Offside Stop lamp not working (1.2.1b)

Pass 22 Feb 2016 75,199 miles
Pass 20 Feb 2015 73,690 miles

Offside Rear Rear wheel bearing has slight play (2.6.2)

Pass 5 Feb 2014 70,176 miles
Pass 7 Feb 2013 66,706 miles
Pass 26 Jan 2012 66,214 miles
Pass 1 Feb 2011 65,879 miles
Fail 31 Jan 2011 65,876 miles

Offside Rear Stop lamp adversely affected by the operation of another lamp (1.2.1f)

Parking brake: efficiency below requirements (3.7.B.7)

Offside Rear wheel bearing has slight play (2.6.2)

Pass 4 Feb 2010 64,692 miles
Fail 3 Feb 2010 64,689 miles

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

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

Pass 6 May 2009 63,263 miles

Offside Front Vehicle structure has slight corrosion (6.1.B.2)

Pass 1 May 2008 63,201 miles

Both front tyres are showing early signs of wear to the inner & outer edges without significant wear to the middle of the tyres.

Lower front suspension rubbers are showing signs of wear and deteriation.

Nearside Front wheel bearing has slight play (2.5.A.3c)

Nearside Power steering ram(s) has slight seepage from a seal (2.3.3b)

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

Offside Rear wheel bearing has slight play (2.6.2)

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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MMX 428P is a 1976 Triumph Stag in Blue with a 2,400cc petrol engine. This vehicle has been through 25 MOT tests with a personal pass rate of 76%.

Across all 1976 Triumph Stag models, the average MOT pass rate is 75.5% with a typical mileage of 57,333 miles. This particular vehicle has performed better than the average for its year.

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 MMX 428P, 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 50 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 MMX 428P?

You can check the full history of MMX 428P by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was MMX 428P registered?

MMX 428P is a 1976 Triumph Stag, first registered on 14 May 1976.

Is MMX 428P safe to buy?

The MOT history for MMX 428P shows 25 tests with a 76% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does MMX 428P 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 MMX 428P. 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.