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SEAT tops ‘True MPG’ tests

SEAT Leon SE Ecomotive 1.6 TDI named the most fuel-efficient car tested by What Car? magazine’s True MPG team over the last year.

The popular hatchback beat more than 200 other models, managing a real-world average fuel economy figure of 63.2mpg.

Since launching True MPG with official fuel partner Tesco in 2012, almost 500 cars have been assessed in real-world conditions, using cutting-edge test equipment, achieving economy figures that are an average of 20% lower than the Government figures.

At the other end of the table, the Vauxhall VXR8 finished last, achieving a True MPG figure of just 19.5mpg.

Even the SEAT’s table-topping figure was below its claimed figure of 85.6mpg – a result of manufacturers being forced by legislation to test their cars in laboratory conditions.

The Citroën C3 VTR+ e-HDi Airdream remains the most efficient car ever tested in True MPG conditions since 2012, achieving 70.3mpg.

The most efficient vehicles tested over the past 12 months

Make

Model

Derivative

Fuel

Engine size (litre)

Power (PS)

Official Combined MPG

True MPG

Difference

SEAT Leon 5DR SE Ecomotive 1.6 TDI 110

Diesel

1.6

110

85.6

63.2

-26.20%

Citroen DS3 e-HDi Airdream DSport Plus

Diesel

1.6

115

74.4

63

-15.30%

MINI Cooper D

Diesel

1.5

114

80.7

62.6

-22.40%

Skoda Octavia Greenline III TDi CR

Diesel

1.6

110

88.3

61.9

-29.90%

Honda Civic i-DTEC EX+

Diesel

1.6

118

72.4

61.8

-14.60%

SEAT Leon ST SE Ecomotive 1.6 TDI 110

Diesel

1.6

110

85.6

61.5

-28.20%

Peugeot 308 Allure BlueHDi

Diesel

1.6

120

88.3

60.8

-31.10%

Citroën C4 Cactus Flair BlueHDI

Diesel

1.6

100

83.1

60.1

-27.70%

Skoda Octavia Greenline III TDi CR

Diesel

1.6

110

88.3

59.4

-32.70%

Hyundai i20 SE CRDi

Diesel

1.4

90

68.9

59.4

-13.80%

Least efficient vehicles tested over the past 12 months

Make

Model

Derivative

Fuel

Official Combined MPG

True MPG

Difference

Vauxhall VXR8 GTS Petrol

18.5

19.5

5.4%

Porsche Cayenne V8 Turbo Petrol

25.2

20.7

-17.9%

Aston Martin V8 Vantage S N430 Petrol

21.9

23.2

5.9%

Porsche Macan Turbo S-A Petrol

30.7

23.4

-23.8%

Lexus RC-F F Sport V8 Petrol

26.2

23.8

-9.2%

Audi S8 SE Executive LWB Petrol

29.4

24.7

-16.0%

Jaguar F-Type R Petrol

25.5

25.7

0.8%

Mitsubishi Shogun DI-DC LWB SG4 Diesel

33.2

26.5

-20.2%

Jaguar F-Type V6 Petrol

32.8

26.7

-18.6%

Subaru WRX STi Symetrical AWD Petrol

27.2

26.9

-1.1%

What Car? editor, Jim Holder, said: “Buyers get frustrated when they can’t achieve claimed fuel economy figures. That’s because the official EU tests are carried out in a laboratory under very specific conditions that don’t reflect real-world driving. “

 

About Gareth Herincx

Gareth is a versatile journalist, copywriter and digital editor who's worked across the media in newspapers, magazines, TV, teletext, radio and online. After long stints at the BBC, GMTV and ITV, he now specialises in motoring.

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