Porsche 911: no years to avoid

Based on 39,159 real MOT tests from DVSA records. Each year is compared against every other car first registered the same year — otherwise the numbers would only tell you that older cars fail more, which you knew.

The short answer

No model year stands out as one to avoid. Every year sits within 15% of the failure rate for cars of the same age. The 2011 is the strongest, failing 83% less often than average.

Found a Porsche 911 you like?

Averages tell you what to expect. Its registration tells you what actually happened — every MOT, every advisory, and whether the mileage adds up.

Every 911 model year

Shaded rows are the years that differ most from other cars of the same age — worse, better.

MOT failure rate by registration year for the Porsche 911
Registered	MOT tests	Fail rate	vs same-age cars
1998	1,023	17.4%	44% better
1999	1,244	15.8%	51% better
2001	1,504	16.0%	54% better
2002	2,366	15.3%	57% better
2003	2,610	16.2%	55% better
2004	2,397	14.8%	60% better
2005	2,822	12.4%	66% better
2006	2,812	12.6%	65% better
2007	2,444	10.9%	69% better
2008	1,827	9.4%	73% better
2009	1,377	9.6%	72% better
2010	1,582	7.3%	78% better
2011	1,122	5.4%	83% better
2012	1,485	7.3%	74% better
2013	1,268	6.2%	76% better
2014	1,568	4.7%	80% better
2015	1,720	4.4%	78% better
2016	1,724	4.1%	76% better
2017	1,929	4.6%	68% better
2018	2,215	5.3%	56% better
2019	2,120	4.3%	58% better

How this is worked out

Every MOT test recorded by DVSA in 2023 on a Porsche 911, grouped by the year the car was first registered. Retests are excluded, so a car that failed and was fixed still counts as a failure. Each year's rate is then divided by the rate for all cars first registered that year — so 120 means 20% more failures than its contemporaries, not 20% more than a brand new car.

Contains public sector information licensed under the Open Government Licence v3.0.