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XLN 448S

1978 Triumph Stag Auto

Brown Petrol 2997cc
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MOT Status

Expired
Expires28 Apr 2026
Tests22 (15 pass, 7 fail)
Pass rate68.2%

Mileage

28,377 mi
Last recorded28,377 miles
Recorded on29 Apr 2025
Typical for 1978 Triumph Stag Auto56,939 mi

Below or average mileage for this year

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

RegistrationXLN 448S
MakeTriumph
ModelStag Auto
Year1978
ColourBrown
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

15 pass 7 fail
Pass 29 Apr 2025 28,377 miles

Front to rear rigid brake pipes corroded

Nearside Front rigid brake pipe corroded

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

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

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

Power steering pipe/hose has slight seepage (2.1.5 (a))

Rear rigid brake pipes corroded

Pass 17 Mar 2022 27,488 miles

Front to rear brake pipe corroded

Nearside Front brake pipe corroded

Rear brake pipe corroded

Fail 17 Mar 2022 27,488 miles

Nearside Headlamp aim too high wont adjust (4.1.2 (a))

Nearside Rear Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))

Front to rear brake pipe corroded

Nearside Front Wheel bearing has slight play close to excessive (5.1.3 (a) (i))

Nearside Front brake pipe corroded

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

Rear brake pipe corroded

Pass 20 Apr 2018 25,504 miles

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

Offside Front Power steering pipe(s) or hose(s) has slight seepage from a seal (2.3.3b)

Offside Rear drive shaft gaiter fouling exhaust

Oil leak

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

Fail 16 Apr 2018 25,488 miles

Driver's seat insecure (6.2.A.1)

Nearside Rear Seat belt locking mechanism does not secure or release (5.2.5a)

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

Offside Front Power steering pipe(s) or hose(s) has slight seepage from a seal (2.3.3b)

Offside Rear drive shaft gaiter fouling exhaust

Oil leak

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

Pass 7 Apr 2017 24,105 miles
Fail 7 Apr 2017 24,105 miles

Nearside Headlamp aim too high and too far to the right. (1.8)

Nearside Stop lamp not working (1.2.1b) DANGEROUS

Offside Stop lamp not working (1.2.1b) DANGEROUS

Pass 19 Apr 2016 22,275 miles

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

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

Parking brake lever has little reserve travel (3.1.6b)

Fail 12 Apr 2016 22,270 miles

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

Nearside Front Headlamp aim too high (1.8)

Steering column shaft has excessive end float (2.1.3)

Steering wheel locking device insecure (2.1.6)

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

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

Parking brake lever has little reserve travel (3.1.6b)

Pass 30 Mar 2015 20,491 miles

Nearside Front Brake pipe slightly corroded (3.6.B.2c)

Parking brake lever has little reserve travel (3.1.6b)

Pass 20 Mar 2014 16,414 miles
Pass 12 Mar 2013 14,168 miles

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

power steering oil cooler has broken bolt

Pass 10 Apr 2012 10,049 miles

Offside Rear wheel bearing has slight play (2.6.2)

nearside front exhaust securing bracket fractured. (located under gearbox)

power steering oil cooler has a broken securing bolt

Fail 12 Apr 2011 4,971 miles

Nearside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement (2.4.G.2)

Offside Front Anti-roll bar linkage rubber mounting deteriorated resulting in excessive movement (2.4.G.2)

Parking brake lever has no reserve travel (3.1.6b)

Pass 12 Apr 2011 4,971 miles
Pass 31 Mar 2010 2,804 miles
Fail 31 Mar 2010 2,804 miles

Exhaust emissions hydrocarbon content excessive (7.3.B.1b)

Nearside Rear Registration plate lamp not working (1.1.5c)

Nearside Rear rear brake recording little or no effort (3.7.B.5a)

Nearside Rear rear parking brake recording little or no effort (3.7.B.6a)

rear brake application uneven (3.7.B.2)

Pass 19 Jan 2009 492 miles
Pass 11 Feb 2008 98,231 miles
Pass 16 Feb 2007 95,894 miles
Fail 14 Feb 2007 95,894 miles

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

Steering column top bearing excessively worn (2.1.2c)

Nearside Rear wheel bearing has slight play (2.6.2)

Pass 5 May 2006 93,574 miles

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

Offside Front Lower Suspension arm has slight play in a ball joint (2.4.G.2)

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

How Reliable is the Triumph Stag Auto?

Based on 21,225 MOT tests across 2,079 vehicles.

76.9%
Pass Rate
397
Miles/Year
55
Year Lifespan
2,079
On UK Roads

Top MOT Failure Points

Windscreen washer provides insufficient washer liquid 740
Parking brake: efficiency below requirements 550
Suspension component mounting prescribed area is excessively corroded 491
brake binding 442
Exhaust emissions carbon monoxide content excessive 440
Full Triumph Stag Auto reliability report

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XLN 448S is a 1978 Triumph Stag Auto in Brown with a 2,997cc petrol engine. This vehicle has been through 22 MOT tests with a personal pass rate of 68.2%.

Across all 1978 Triumph Stag Auto models, the average MOT pass rate is 76.2% with a typical mileage of 56,939 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 Auto fails its MOT is windscreen washer provides insufficient washer liquid, accounting for 740 recorded failures. If you're considering buying XLN 448S, it's worth having these areas checked by a mechanic before committing.

The Triumph Stag Auto typically stays on UK roads for around 55 years. At 48 years old, this Triumph Stag Auto is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of XLN 448S?

You can check the full history of XLN 448S by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was XLN 448S registered?

XLN 448S is a 1978 Triumph Stag Auto, first registered on 1 January 1978.

Is XLN 448S safe to buy?

The MOT history for XLN 448S shows 22 tests with a 68.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does XLN 448S 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 XLN 448S. 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.