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991 CNN

2005 Porsche Boxster

Black Petrol 3179cc
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MOT Status

Valid
Expires28 Jun 2026
Tests26 (20 pass, 6 fail)
Pass rate76.9%

Mileage

92,778 mi
Last recorded92,778 miles
Recorded on19 Jun 2025
Typical for 2005 Porsche Boxster53,703 mi

Significantly above average — investigate

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

Registration991 CNN
MakePorsche
ModelBoxster
Year2005
ColourBlack
Fuel typePetrol
Engine3,179cc

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

20 pass 6 fail
Pass 19 Jun 2025 92,778 miles

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

Pass 17 Jun 2024 92,239 miles

all brake pipes covered in underseal

Pass 16 Jun 2023 91,930 miles

Brake pipe corroded, covered in grease or other material all brake pipes coated with sealant (1.1.11 (c))

Pass 29 Jun 2022 91,204 miles

Brake pipe corroded, covered in grease or other material front and rear pipes coated with body sealant (1.1.11 (c))

Nearside Rear Tyre worn close to legal limit/worn on edge 2+mm (5.2.3 (e))

Offside Rear Tyre worn close to legal limit/worn on edge 2+mm (5.2.3 (e))

Fail 15 Jun 2022 91,200 miles

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

Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer's specified limits (8.2.1.2 (a))

Brake pipe corroded, covered in grease or other material front and rear pipes coated with body sealant (1.1.11 (c))

Nearside Rear Tyre worn close to legal limit/worn on edge 2+mm (5.2.3 (e))

Offside Rear Tyre worn close to legal limit/worn on edge 2+mm (5.2.3 (e))

Pass 21 Jun 2021 89,507 miles
Pass 25 Jun 2020 88,154 miles
Pass 3 May 2019 84,542 miles
Pass 15 May 2018 81,886 miles
Fail 15 May 2018 81,886 miles

Brake performance not tested due to burst pipe (3.7.A.1)

Emissions not tested (7.3.A.1)

Pass 18 Jul 2017 79,641 miles
Pass 15 Jul 2016 77,072 miles
Pass 24 Jul 2015 74,215 miles
Fail 20 Jul 2015 74,181 miles

Nearside Rear coil spring broken (2.4.C.1a)

Pass 18 Jul 2014 70,617 miles
Fail 17 Jul 2014 70,617 miles

Offside Rear coil spring broken (2.4.C.1a)

Pass 12 Jun 2014 70,373 miles
Pass 21 May 2014 70,215 miles

Oil leak

drivers window not working

Fail 15 May 2014 70,215 miles

Nearside Front coil spring broken (2.4.C.1a)

Offside Front Tyre has ply or cords exposed (4.1.D.1b)

Offside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)

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)

Oil leak

drivers window not working

Pass 13 May 2013 60,266 miles
Pass 14 May 2012 54,052 miles
Pass 5 Sep 2011 51,134 miles
Pass 20 Sep 2010 48,071 miles

nearside rear brake disc starting to pitt

offside rear brake disc starting to pitt

Fail 10 May 2010 45,781 miles

Nearside Front brake disc excessively pitted (3.5.1h)

Offside Front brake disc excessively pitted (3.5.1h)

Nearside Rear brake disc slightly pitted (3.5.1h)

Offside Rear brake disc slightly pitted (3.5.1h)

Pass 7 May 2009 40,482 miles

All four brake discs slightly pitted

Pass 31 May 2008 33,689 miles

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

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

How Reliable is the Porsche Boxster?

Based on 726,695 MOT tests across 46,886 vehicles.

82.8%
Pass Rate
2,475
Miles/Year
29
Year Lifespan
46,886
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 19,504
Brake pipe excessively corroded 6,317
Exhaust emissions Lambda reading after 2nd fast idle outside specified limits 5,538
brake disc excessively pitted 5,177
position lamp(s) not working 5,126
Full Porsche Boxster reliability report

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991 CNN is a 2005 Porsche Boxster in Black with a 3,179cc petrol engine. This vehicle has been through 26 MOT tests with a personal pass rate of 76.9%.

Across all 2005 Porsche Boxster models, the average MOT pass rate is 84.4% with a typical mileage of 53,703 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 Boxster fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 19,504 recorded failures. If you're considering buying 991 CNN, it's worth having these areas checked by a mechanic before committing.

The Porsche Boxster typically stays on UK roads for around 29 years. At 21 years old, this Porsche Boxster is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of 991 CNN?

You can check the full history of 991 CNN by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was 991 CNN registered?

991 CNN is a 2005 Porsche Boxster, first registered on 18 May 2005.

Is 991 CNN safe to buy?

The MOT history for 991 CNN shows 26 tests with a 76.9% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does 991 CNN 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 991 CNN. 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.