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304 KOU

1999 Porsche 911

Silver Petrol 3387cc
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MOT Status

Valid
Expires8 Apr 2027
Tests29 (21 pass, 8 fail)
Pass rate72.4%

Mileage

129,486 mi
Last recorded129,486 miles
Recorded on9 Apr 2026
Typical for 1999 Porsche 91175,220 mi

Significantly above average — investigate

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

Registration304 KOU
MakePorsche
Model911
Year1999
ColourSilver
Fuel typePetrol
Engine3,387cc

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

21 pass 8 fail
Pass 9 Apr 2026 129,486 miles

Nearside Front Coil spring corroded (5.3.1 (b) (i))

Offside Front Coil spring corroded (5.3.1 (b) (i))

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

Fail 31 Mar 2026 129,455 miles

Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))

Nearside Front Coil spring corroded (5.3.1 (b) (i))

Offside Front Coil spring corroded (5.3.1 (b) (i))

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

Pass 1 Apr 2025 126,983 miles

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

Pass 3 Apr 2024 125,411 miles

Nearside Front Track rod end ball joint has slight play (2.1.3 (b) (i))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Steering rack gaiter damaged or deteriorated, but preventing the ingress of dirt (2.1.3 (g) (i))

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

Offside Rear Exhaust has a minor leak of exhaust gases flexi exhaust (6.1.2 (a))

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

Power steering component has slight seepage from a component (2.1.5 (a))

Fail 2 Apr 2024 125,411 miles

Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c))

Nearside Front Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

Nearside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Offside Rear Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Nearside Front Track rod end ball joint has slight play (2.1.3 (b) (i))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Steering rack gaiter damaged or deteriorated, but preventing the ingress of dirt (2.1.3 (g) (i))

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

Offside Rear Exhaust has a minor leak of exhaust gases flexi exhaust (6.1.2 (a))

Offside Rear exhaust clamp broken

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

Power steering component has slight seepage from a component (2.1.5 (a))

Pass 24 Mar 2023 122,866 miles

Nearside Front Track rod end ball joint has slight play (2.1.3 (b) (i))

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

Pass 4 Apr 2022 121,365 miles

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

Pass 28 Jun 2021 120,073 miles
Pass 6 Jul 2020 117,439 miles

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

Pass 10 Jul 2019 116,033 miles
Fail 10 Jul 2019 116,031 miles

Offside Front Track rod end ball joint dust cover insecure so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii))

Windscreen washer not working (3.5 (a))

Pass 11 Jul 2018 113,053 miles
Fail 10 Jul 2018 113,051 miles

Offside Front Brake pipe leaking on a hydraulic braking system into caliper (1.1.11 (b) (ii)) DANGEROUS

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

Pass 23 Jun 2017 111,369 miles

exhaust corroded

Fail 23 Jun 2017 111,368 miles

Offside Rear rear brake binding (3.7.B.1)

exhaust corroded

Pass 10 Jun 2016 107,849 miles

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

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

Fail 9 Jun 2016 107,806 miles

Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)

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

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

Pass 24 Jun 2015 101,397 miles
Fail 24 Jun 2015 101,397 miles

Offside Front Headlamp aim too high (1.8)

Pass 14 Mar 2014 93,398 miles

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

Pass 10 Dec 2012 84,498 miles
Pass 31 Oct 2011 80,239 miles

plastic undertrays fitted

Fail 31 Oct 2011 80,239 miles

Rear Rear fog lamp not working (1.3.2b)

Rear Registration plate lamp not working (1.1.C.1d)

plastic undertrays fitted

Pass 19 Nov 2010 76,310 miles

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

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

Pass 20 Nov 2009 72,757 miles
Pass 18 Nov 2008 68,054 miles
Pass 28 Nov 2007 63,835 miles

Nearside Front Tyre worn close to the legal limit (4.1.E.1)

Nearside Front brake disc slightly pitted (3.5.1h)

Nearside Rear brake disc slightly pitted (3.5.1h)

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

Offside Front brake disc slightly pitted (3.5.1h)

Offside Rear brake disc slightly pitted (3.5.1h)

Pass 26 Oct 2006 47,970 miles

Service brake: service brake efficiency only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.7)

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

Pass 27 Jan 2006 47,045 miles

How Reliable is the Porsche 911?

Based on 977,057 MOT tests across 73,061 vehicles.

85.2%
Pass Rate
1,867
Miles/Year
47
Year Lifespan
73,061
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 20,869
position lamp(s) not working 7,590
Windscreen washer provides insufficient washer liquid 6,439
Headlamp aim too high 6,432
Brake pipe excessively corroded 5,466
Full Porsche 911 reliability report

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304 KOU is a 1999 Porsche 911 in Silver with a 3,387cc petrol engine. This vehicle has been through 29 MOT tests with a personal pass rate of 72.4%.

Across all 1999 Porsche 911 models, the average MOT pass rate is 80.2% with a typical mileage of 75,220 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 Porsche 911 fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 20,869 recorded failures. If you're considering buying 304 KOU, it's worth having these areas checked by a mechanic before committing.

The Porsche 911 typically stays on UK roads for around 47 years. At 27 years old, this Porsche 911 is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of 304 KOU?

You can check the full history of 304 KOU by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was 304 KOU registered?

304 KOU is a 1999 Porsche 911, first registered on 1 December 1999.

Is 304 KOU safe to buy?

The MOT history for 304 KOU shows 29 tests with a 72.4% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does 304 KOU 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 304 KOU. 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.