The most reliable cars of 2013

Every 2013 car tested in Britain in one year, ranked by how often it failed. Measured, not surveyed.

Best

#	Car	Engine	Failure rate	Tests
1	Porsche Boxster	3.4 Petrol	5%	592
2	Porsche 911	3.8 Petrol	6%	1,030
3	Porsche Boxster	2.7 Petrol	6%	753
4	Porsche Cayman	3.4 Petrol	6%	554
5	Jaguar F-Type	3.0 Petrol	8%	923
6	Fiat Auto Trail	2.3 Diesel	8%	565
7	Audi A8	3.0 Diesel	8%	696
8	Porsche Cayman	2.7 Petrol	8%	563
9	Lexus RX	3.5 Hybrid	9%	1,944
10	Jaguar XK	5.0 Petrol	9%	913
11	Toyota Prius	1.8 Hybrid	10%	10,297
12	Audi TT	1.8 Petrol	10%	2,324
13	Lexus IS	2.5 Hybrid	10%	1,607
14	Audi Q5	3.0 Diesel	11%	1,576
15	Honda CR-V	2.0 Petrol	11%	6,688
16	Honda Jazz	1.3 Petrol	11%	18,747
17	Toyota IQ	1.0 Petrol	11%	1,245
18	Toyota GT86	2.0 Petrol	12%	1,760
19	Lexus CT	1.8 Hybrid	12%	4,088
20	Mazda MX-5	2.0 Petrol	12%	2,055
21	Fiat Ducato	2.3 Diesel	12%	2,231
22	Audi A6	3.0 Diesel	12%	2,697
23	Honda Jazz	1.3 Hybrid	12%	630
24	Audi TT	2.0 Petrol	12%	2,073
25	Audi Q7	3.0 Diesel	12%	3,558

Worst

#	Car	Engine	Failure rate	Tests
1	Renault Kangoo	1.5 Diesel	32%	3,352
2	Great Wall Steed	2.0 Diesel	31%	560
3	Nissan Primastar	2.0 Diesel	31%	735
4	Nissan Juke	1.5 Diesel	31%	16,362
5	Citroen DS3	1.2 Petrol	31%	534
6	Vauxhall Vivaro	2.0 Diesel	30%	14,430
7	Citroen DS3	1.6 Diesel	30%	12,238
8	Renault Clio	1.5 Diesel	30%	7,339
9	Renault Megane	1.6 Petrol	29%	1,829
10	Renault G	1.5 Diesel	29%	649
11	SsangYong Korando	2.0 Diesel	29%	708
12	Nissan Qashqai	1.5 Diesel	29%	21,468
13	Renault Megane	1.5 Diesel	29%	7,009
14	Renault Trafic	2.0 Diesel	29%	6,106
15	Nissan Pathfinder	2.5 Diesel	29%	547
16	Renault Clio	1.1 Petrol	29%	11,749
17	Peugeot 5008	1.6 Diesel	29%	2,602
18	Citroen DS4	1.6 Diesel	29%	3,429
19	Renault Captur	1.5 Diesel	28%	3,731
20	Vauxhall Combo	1.2 Diesel	28%	3,765
21	Citroen Dispatch	2.0 Diesel	28%	1,331
22	Renault Megane	1.6 Diesel	28%	969
23	Nissan NV200	1.5 Diesel	28%	5,335
24	KIA RIO	1.1 Diesel	28%	1,898
25	Chevrolet Aveo	1.2 Petrol	28%	814

What this measures

Britain tests every car over three years old against a published standard and publishes the result. This is that record for the 2013 model year, so every car here is the same age and none is flattered by being newer.

A car driven less fails less. An expensive one often sits high for reasons that are not about how well it was built, which is why the app can rank these at the same odometer reading.