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UAO 818S

1977 Triumph Stag

Blue Petrol 2997cc
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MOT Status

Expired
Expires5 Jun 2026
Tests15 (13 pass, 2 fail)
Pass rate86.7%

Mileage

71,165 mi
Last recorded71,165 miles
Recorded on6 Jun 2025
Typical for 1977 Triumph Stag60,708 mi

Above average mileage for this year

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

RegistrationUAO 818S
MakeTriumph
ModelStag
Year1977
ColourBlue
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 2 fail
Pass 6 Jun 2025 71,165 miles
Fail 27 May 2025 71,165 miles

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

Front Brakes imbalanced across an axle Axle 1 (1.2.1 (b) (i))

Nearside Rear Service brake lagging in operation (1.2.1 (d))

Offside Front Seat belt webbing significantly weakened cut greater than 4mm (7.1.2 (b))

Offside Headlamp aim too low (4.1.2 (a))

Registration plate lamp inoperative in the case of a single lamp or all lamps (4.7.1 (b) (ii))

Windscreen washer not working (3.5 (a))

Nearside Front Steering linkage ball joint has slight play inner rack joint (2.1.3 (b) (i))

Nearside Front Upper Anti-roll bar linkage pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

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

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

Offside Front Upper Anti-roll bar linkage 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))

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

Rear Upper differential mounting bushes slightly deteriorated

Pass 24 May 2017 70,604 miles
Pass 24 May 2016 70,576 miles
Pass 19 May 2015
Fail 19 May 2015 70,317 miles

Nearside Headlamp aim too high (1.8)

Pass 29 May 2014 70,035 miles
Pass 31 May 2013 69,437 miles
Pass 29 May 2012 69,181 miles
Pass 14 May 2011 68,443 miles
Pass 27 May 2010 67,688 miles
Pass 26 May 2009 67,288 miles
Pass 2 May 2008 66,991 miles
Pass 5 May 2007 66,814 miles
Pass 18 May 2006 60,639 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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UAO 818S is a 1977 Triumph Stag in Blue with a 2,997cc petrol engine. This vehicle has been through 15 MOT tests with a personal pass rate of 86.7%.

Across all 1977 Triumph Stag models, the average MOT pass rate is 77.7% with a typical mileage of 60,708 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 UAO 818S, 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 49 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 UAO 818S?

You can check the full history of UAO 818S by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was UAO 818S registered?

UAO 818S is a 1977 Triumph Stag, first registered on 14 November 1977.

Is UAO 818S safe to buy?

The MOT history for UAO 818S shows 15 tests with a 86.7% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does UAO 818S 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 UAO 818S. 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.