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YEF 615T

1978 Triumph Stag

Green Petrol 2997cc
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MOT Status

Valid
Expires27 Mar 2027
Tests23 (17 pass, 6 fail)
Pass rate73.9%

Mileage

61,136 mi
Last recorded61,136 miles
Recorded on5 Mar 2026
Typical for 1978 Triumph Stag62,190 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

RegistrationYEF 615T
MakeTriumph
ModelStag
Year1978
ColourGreen
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

17 pass 6 fail
Pass 5 Mar 2026 61,136 miles

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

Offside Rear Shock absorbers has light misting of oil (5.3.2 (b))

Upper Steering column top bearing slightly worn (2.2.2 (b))

both front antiroll bar rubber bushes cracked/perished

Pass 28 Mar 2025 60,478 miles

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

Fail 26 Mar 2025 60,469 miles

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

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

Pass 6 Mar 2024 59,160 miles
Fail 23 Jan 2024 59,147 miles

Exhaust emissions carbon monoxide content excessive LEFT HAND BANK 8.39% PASS MAX 4.50% (8.2.1.2 (b))

Exhaust emissions carbon monoxide content excessive RIGHT HAND BANK 8.29 PASS MAX 4.50 (8.2.1.2 (b))

Nearside Rear Stop lamp(s) not working (4.3.1 (a) (ii))

Pass 2 Feb 2023 58,347 miles
Pass 20 Aug 2018 58,207 miles
Pass 7 Aug 2017 58,125 miles
Pass 5 Aug 2016 57,771 miles
Pass 7 Aug 2015 57,544 miles

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

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

Pass 9 Apr 2014 56,889 miles
Fail 2 Apr 2014 56,889 miles

Nearside front brake excessively fluctuating (3.7.B.3)

Nearside rear brake excessively fluctuating (3.7.B.3)

Offside front brake excessively fluctuating (3.7.B.3)

Offside rear brake excessively fluctuating (3.7.B.3)

front brake application uneven (3.7.B.2)

Pass 20 Sep 2012 56,195 miles
Fail 13 Sep 2012 56,194 miles

Nearside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt (2.4.G.2)

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

Offside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt (2.4.G.2)

Pass 16 Sep 2011 55,747 miles
Pass 24 Sep 2010 54,688 miles
Pass 9 Sep 2009 53,893 miles

Exhaust has a minor leak of exhaust gases (7.1.2)

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

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

Offside Rear Rear wheel bearing has slight play (2.6.2)

Oil leak

Fail 8 Sep 2009 53,893 miles

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

Nearside Direction indicators not in good working order (function impaired) (1.5.A1b)

Nearside Headlamp aim too high (1.8)

Offside Direction indicators not in good working order (function impaired) (1.5.A1b)

Offside Headlamp aim too high (1.8)

Exhaust has a minor leak of exhaust gases (7.1.2)

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

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

Offside Rear Rear wheel bearing has slight play (2.6.2)

Oil leak

Pass 11 Sep 2008 53,685 miles

Front Exhaust has a minor leak of exhaust gases (7.1.2)

Front brake discs slightly distorted.O/S/F lower balljoint boot split

Offside Rear wheel bearing has slight play (2.6.2)

Steering column top bearing slightly worn (2.1.2c)

Pass 20 Sep 2007 53,105 miles
Fail 19 Sep 2007 53,105 miles

Nearside Rear Tyre has a lump, caused by separation or partial failure of its structure (4.1.D.1b)

O/S/R tyre slightly misshaped.Slight exhaust blow from frontpipes.Slight corrosion N/S/F outrigger.

Pass 18 Sep 2006 52,752 miles

Indicators sometimes slow when engine idling ,L/H manifold stud broken.Front brake discs slightly distorted.Slight corrosion N/S/F chassis outrigger

Pass 14 Sep 2005 52,422 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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YEF 615T is a 1978 Triumph Stag in Green with a 2,997cc petrol engine. This vehicle has been through 23 MOT tests with a personal pass rate of 73.9%.

Across all 1978 Triumph Stag models, the average MOT pass rate is 75.5% with a typical mileage of 62,190 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 YEF 615T, 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 48 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 YEF 615T?

You can check the full history of YEF 615T by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was YEF 615T registered?

YEF 615T is a 1978 Triumph Stag, first registered on 1 August 1978.

Is YEF 615T safe to buy?

The MOT history for YEF 615T shows 23 tests with a 73.9% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does YEF 615T 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 YEF 615T. 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.