Purpose

I will try my best to provide detailed info on various cars and what is like to live with them, I have already produced a few for Jaguar-car-forums, I will do my best to be unbiased, but it will be hard for some cars. I will re-produce press releases and copy from other motoring news.

Tuesday 24 March 2015

WhatCar magazine names and shames best and worst in true MPG lists.

  • Seat Leon TDI is most efficient in What Car?’s tests; Vauxhall VXR8 the least
  • Aston Martin V8 Vantage S surpasses official MPG figure, Ford Fiesta Zetec S Red Edition was the furthest away
  • 268 cars tested during past 12 months
The most fuel-efficient car tested by the What Car? True MPG team over the last 12 months* – topping more than 200 other models – was the Seat Leon 5DR SE Ecomotive 1.6 TDI, managing a real-world average fuel economy figure of 63.2mpg. 

The top three best cars (yet they are still way below claimed)

The Bottom Three - (but aren't they a fun bunch)

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. 
The most efficient vehicles tested over the past 12 months
MakeModelDerivativeFuelEngine size
(litre)
Power
(PS)
Official
Combined MPG
True
MPG
Difference
SEATLeon 5DRSE Ecomotive
1.6 TDI 110 
Diesel1.611085.663.2-26.20%
CitroenDS3e-HDi Airdream
DSport Plus
Diesel1.611574.463-15.30%
MiniCooperDDiesel1.511480.762.6-22.40%
SkodaOctaviaGreenline III
TDi CR
Diesel1.611088.361.9-29.90%
HondaCivici-DTEC EX+Diesel1.611872.461.8-14.60%
SEATLeon STSE Ecomotive
1.6 TDI 110 
Diesel1.611085.661.5-28.20%
Peugeot308Allure BlueHDiDiesel1.612088.360.8-31.10%
CitroënC4 CactusFlair BlueHDIDiesel1.610083.160.1-27.70%
SkodaOctaviaGreenline III
TDi CR
Diesel1.611088.359.4-32.70%
Hyundaii20SE CRDiDiesel1.49068.959.4-13.80%
Vauxhall’s VXR8 was the least efficient overall, recording a paltry 19.5mpg; however, like the Aston Martin, it actually exceeded its official figure of 18.5mpg. 
Least efficient vehicles tested over the past 12 months
MakeModelDerivativeFuelOfficial
Combined MPG
True MPGDifference
VauxhallVXR8GTSPetrol18.519.55.4%
PorscheCayenneV8 TurboPetrol25.220.7-17.9%
Aston MartinV8 Vantage SN430Petrol21.923.25.9%
PorscheMacanTurbo S-APetrol30.723.4-23.8%
LexusRC-FF Sport V8Petrol26.223.8-9.2%
AudiS8SE Executive LWBPetrol29.424.7-16.0%
JaguarF-TypeRPetrol25.525.70.8%
MitsubishiShogunDI-DC LWB SG4Diesel33.226.5-20.2%
JaguarF-TypeV6Petrol32.826.7-18.6%
SubaruWRX STiSymetrical AWDPetrol27.226.9-1.1%
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, on the road according to True MPG analysis, achieving 70.3mpg. 
Whatcar.com 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. However, we took action a few years ago by launching True MPG and have published real-world figures for hundreds of popular vehicles since.”
The testing has also highlighted an unexpected trend among high-performance cars for getting closest to their official claimed fuel economy figures.
 While far from the most economical overall, the Aston Martin V8 S, which packs 430bhp, beat its official fuel economy figure by 6% – achieving 23.2 instead of 21.9mpg. 

Another powerful V8-powered sports car, the new Jaguar F-Type R, was the only other vehicle to achieve the same feat during the past 12 months, with a True MPG figure of 25.7 compared to its official 25.5mpg.
Alternatively, the Ford Fiesta Zetec S was furthest away from its EU-sanctioned fuel economy, coming in 37% below claimed consumption figures.
Whatcar.com True MPG data is scientifically calculated by experienced engineers, who drive test vehicles over a variety of real roads, including motorway, A- and B-roads and in towns and villages.
Please visit http://www.whatcar.com/truempg/my-true-mpg for more detailed information.

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