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S404 COU

1998 Triumph Trident

Black Petrol 885cc
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MOT Status

Valid
Expires3 Oct 2026
Tests24 (19 pass, 5 fail)
Pass rate79.2%

Mileage

34,722 mi
Last recorded34,722 miles
Recorded on4 Sep 2025
Typical for 1998 Triumph Trident21,696 mi

Significantly above average — investigate

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

RegistrationS404 COU
MakeTriumph
ModelTrident
Year1998
ColourBlack
Fuel typePetrol
Engine885cc

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 5 fail
Pass 4 Sep 2025 34,722 miles

Rear brake pads wearing unevenly, (wedge shape)

Pass 20 Sep 2024 33,170 miles

Front Brake cylinder travel close to excessive (1.1.16 (e) (i))

Pass 4 Oct 2023 31,872 miles

Front Brake cylinder travel close to excessive (1.1.16 (e) (i))

Pass 6 Sep 2022 30,412 miles
Pass 15 Jul 2021 28,324 miles

Front Brake pad(s) close to minimum limit (1.1.13 (a))

Front Tyre worn close to the legal limit (5.2.3 (e))

Pass 17 Jul 2020 27,576 miles

Coolant leak ()

Front tyre slightly feathered

Rear Lower Suspension arm pin, bush or joint worn but not resulting in excessive movement link (5.3.4 (a) (i))

Rear Tyre worn close to the legal limit (5.2.3 (e))

Pass 30 Jul 2019 26,432 miles
Pass 18 Jul 2018 24,295 miles
Pass 8 Aug 2017 23,115 miles
Pass 23 Oct 2015 22,932 miles
Pass 22 Oct 2014 22,835 miles
Fail 22 Oct 2014 22,835 miles

Rear Roller brake test indicates a binding brake (3.3.A1a)

Fail 11 Oct 2014 22,798 miles

Offside Front Brake disc(s) friction surface contaminated by oil or grease (3.2.A1k)

Offside Front Brake pad(s) contaminated by oil or grease (3.2.A1k)

Offside Front shock absorber seal failed and leaking oil (2.3.3)

Stop lamp does not illuminate immediately a brake applies (1.3.1a)

Rear Tyre worn close to the legal limit (4.1.3(ii))

chain dry

Pass 14 Sep 2013 22,118 miles

Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)

Offside Front shock absorber has light misting of stanchion (2.3.3)

Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)

Pass 11 Aug 2012 21,542 miles

Offside Front shock absorber has light misting of stanchion (2.3.3)

Pass 6 Aug 2011 21,364 miles
Pass 1 Jul 2010 20,825 miles
Fail 21 Jun 2010 20,824 miles

Front Brake pad(s) contaminated by oil or grease (3.2.A1k)

Offside Front Front shock absorber seal failed and leaking oil (2.3.3)

Offside Front Headlamp at least one does not illuminate on dipped beam (1.2.2a(i))

Pass 27 Apr 2009 18,912 miles
Pass 9 May 2008 18,253 miles
Pass 26 Apr 2007 17,269 miles
Fail 24 Apr 2007 17,268 miles

Offside Front Brake disc(s) cracked (3.2.A1g)

Offside Front shock absorber seal failed and leaking oil (2.3.3)

Drive chain slightly loose (6.2.1d)

Front Brake pad(s) close to minimum limit (3.2A1f(ii))

Front Fairings insecure but not likely to impede the steering (2.1.2e)

Pass 24 Mar 2006 16,778 miles
Fail 24 Mar 2006 16,777 miles

Rear Rear position lamp insecure (1.1.1c)

Front Brake pad(s) close to minimum limit (3.2.A1f(i))

How Reliable is the Triumph Trident?

Based on 29,119 MOT tests across 5,167 vehicles.

87.0%
Pass Rate
546
Miles/Year
54
Year Lifespan
5,167
On UK Roads

Top MOT Failure Points

shock absorber seal failed and leaking oil 320
Stop lamp does not illuminate immediately a brake applies 260
Roller brake test indicates a binding brake 254
Brake pad(s) less than 1.5 mm thick 254
Tyre tread depth is below minimum requirements of 1.0mm 251
Full Triumph Trident reliability report

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S404 COU is a 1998 Triumph Trident in Black with a 885cc petrol engine. This vehicle has been through 24 MOT tests with a personal pass rate of 79.2%.

Across all 1998 Triumph Trident models, the average MOT pass rate is 85.1% with a typical mileage of 21,696 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 Trident fails its MOT is shock absorber seal failed and leaking oil, accounting for 320 recorded failures. If you're considering buying S404 COU, it's worth having these areas checked by a mechanic before committing.

The Triumph Trident typically stays on UK roads for around 54 years. At 28 years old, this Triumph Trident is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of S404 COU?

You can check the full history of S404 COU by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was S404 COU registered?

S404 COU is a 1998 Triumph Trident, first registered on 17 September 1998.

Is S404 COU safe to buy?

The MOT history for S404 COU shows 24 tests with a 79.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does S404 COU 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 S404 COU. 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.