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C121 BYR

1985 Porsche 911

Green Petrol 3164cc
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MOT Status

Valid
Expires29 Aug 2026
Tests21 (17 pass, 4 fail)
Pass rate81%

Mileage

220,896 mi
Last recorded220,896 miles
Recorded on12 Aug 2025
Typical for 1985 Porsche 91199,183 mi

Significantly above average — investigate

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

RegistrationC121 BYR
MakePorsche
Model911
Year1985
ColourGreen
Fuel typePetrol
Engine3,164cc

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 4 fail
Pass 12 Aug 2025 220,896 miles
Pass 30 Aug 2024 220,061 miles
Pass 28 Jul 2023 219,623 miles
Pass 27 Jul 2022 219,334 miles
Pass 21 Jul 2021 219,334 miles
Pass 30 Jul 2020 219,334 miles

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

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

Pass 15 Jul 2019 218,520 miles
Pass 9 Jun 2018 216,473 miles
Pass 20 Jun 2017 214,609 miles
Fail 20 Jun 2017 214,609 miles

Nearside Front Seat belt insecurely fixed to the vehicles structure bolt loose /// (5.2.1a)

Nearside Front Windscreen wiper does not clear the windscreen effectively (8.2.2)

Offside Front Windscreen wiper does not clear the windscreen effectively (8.2.2)

Pass 3 Jun 2016 213,521 miles
Pass 17 Jul 2015 211,951 miles
Fail 17 Jul 2015 211,951 miles

Nearside Rear Direction indicators not working (1.4.A.2c)

Nearside Side repeater not working (1.4.A.2c)

Offside Front position lamp(s) not working (1.1.A.3b)

Fail 8 Jun 2011 209,697 miles

Nearside Front Direction indicators not working (1.4.A.2c)

Rear fog lamp not working (1.3.2b)

Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)

Pass 8 Jun 2011 209,697 miles

Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)

Pass 8 Jun 2010 203,133 miles
Pass 7 May 2009 196,520 miles
Pass 6 Mar 2008 185,593 miles

Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)

Fail 26 Feb 2008 185,593 miles

Nearside Rear position lamp(s) excessively deteriorated so that it is not visible from a reasonable distance (1.1.A.3d)

Nearside Stop lamp adversely affected by the operation of another lamp (1.2.1f)

Offside Rear fog lamp not working (1.3.2b)

Offside Rear position lamp(s) adversely affected by the operation of another lamp (1.1.A.3f)

Offside Stop lamp adversely affected by the operation of another lamp (1.2.1f)

Offside Stop lamp not working (1.2.1b)

Windscreen has damage to an area less than a 10mm circle within zone 'A' (8.3.1a)

Pass 20 Feb 2007 179,333 miles

some corrosion to nearside under body skirt

Pass 8 Feb 2006 168,887 miles

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

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

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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C121 BYR is a 1985 Porsche 911 in Green with a 3,164cc petrol engine. This vehicle has been through 21 MOT tests with a personal pass rate of 81%.

Across all 1985 Porsche 911 models, the average MOT pass rate is 77.7% with a typical mileage of 99,183 miles. This particular vehicle has performed better than the average for its year.

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 C121 BYR, 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 41 years old, this Porsche 911 is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of C121 BYR?

You can check the full history of C121 BYR by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was C121 BYR registered?

C121 BYR is a 1985 Porsche 911, first registered on 31 December 1985.

Is C121 BYR safe to buy?

The MOT history for C121 BYR shows 21 tests with a 81% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does C121 BYR 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 C121 BYR. 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.