Japanese brands were the most reliable.

A new study from Warrantywise, the UK's leading extended car warranty provider, has revealed the Top 10 most and least most reliable used car brands and models according to its Reliability Index.

Using data from over 131,000 extended car warranty plans, the Reliability Index judges every car on things like the frequency of repairs and repair costs.

In what comes as no real surprise, Japanese manufacturers dominated the top of the list, locking out four of the top-five spots.

Honda topped the list overall with 89.38/100 on Warrantywise’s Reliability Index and average repairs costing just £538.59.

2017 Lexus RX

Lexus was second, helped by the RX which didn't record a single fault or repair – making it the most reliable individual model on the list.

Toyota and Suzuki locked out third and fourth respectively ahead of Dacia.

Outside the top five was Hyundai (sixth), Smart (seventh), Kia (eighth), Fiat (ninth9) and Renault (tenth)

"Warrantywise boasts one of the largest data samples when it comes to painting an accurate picture of the dependable – and not so dependable – used cars currently on the market," said Lawrence Whittaker, CEO of Warrantywise. "Our business continues to go from strength-to-strength as we are seeing a very noticeable upswing in the number of car buyers turning to pre-owned cars where they can get a high-specification vehicle for less.

"However, any savings on purchase price can be immediately off-set if a used car develops faults outside of manufacturer warranty and our Reliability Index continues to provide precise, quantifiable data on the best and worst-performing used cars on the market."

2017 Bentley Continental GT

At the other end of the spectrum if was supercars and luxury cars that registered the worst scores.

Ferrari scored just 13.84/100 in the Reliability Index with an average repair cost of £4,913.46 and 36 repairs lodged out of 116 warranty plans in total (a 62 percent repair percentage). Faring slightly better was market rival McLaren (15.12/100) and by Rolls-Royce (26/100) which both logged a proportionally high number of high-cost repairs to reduce their scores. Bentley and Lamborghini completed the top five of worst offenders, ahead of Subaru, Chrysler, Maserati, Land Rover and Tesla.

When it came to individual models, the Bentley Continental GT was given the unenviable crown of the least reliable used car model according to the Warrantywise Reliability Index, with fuel system, electrical, and engine issues cropping up frequently. It recorded one of the most expensive Warrantywise repairs, an electrical issue which cost over £10,000 to repair. Average repair costs for the Bentley Continental GT were £2,298.97.

Top 10 Most Reliable Brands

Pos.

Make

Avg.

Avg.

Overall

Mileage

Repair Cost

Score /100

1

Honda

56,752

£538.59

89.38

2

Lexus

65,674

£937.57

88.96

3

Toyota

54,196

£596.44

87.02

4

Suzuki

41,291

£580.86

81.83

5

Dacia

40,968

£511.42

81.12

6

Hyundai

56,871

£516.60

75.28

7

Smart

31,241

£385.16

74.73

8

Kia

61,839

£526.23

73.65

9

Fiat

45,199

£529.91

72.01

10

Renault

59,679

£574.46

67.82

 

Top 10 least reliable brands

Pos.

Make

Avg.

Avg.

Overall

Mileage

Repair Cost

Score /100

1

Ferrari

19,068

£4,913.46

13.84

2

McLaren

18,195

£4,165.56

15.12

3

Rolls-Royce

37,569

£2,771.53

26.00

4

Bentley

26,375

£2,260.07

26.64

5

Lamborghini

11,966

£2,709.40

30.84

6

Subaru

63,899

£1,862.88

31.83

7

Chrysler

61,697

£1,780.74

35.96

8

Maserati

28,541

£1,635.21

44.99

9

Land Rover

55,463

£1,268.96

45.27

10

Tesla

50,917

£1,289.94

45.56

 

Top 10 most reliable used car models

POS.

Make

Model

1

Lexus

RX

2

Honda

Jazz

3

Mitsubishi

ASX

4

Dacia

Sandero

5

Mazda

2

6

Volkswagen

UP!

7

Nissan

LEAF

8

Lexus

CT

9

Ford

Ecosport

10

Suzuki

Alto

 

Top 10 least reliable used car models

POS.

Make

Model

1

Bentley

Continental GT

2

Audi

A7

3

BMW

X6

4

Porsche

Cayenne

5

Chevrolet

Captiva

6

Land Rover

Range Rover Sport

7

Jaguar

XJ

8

Audi

Q7

9

Mazda

CX5

10

Land Rover

Range Rover