Truman: Would you like to leave a message? can revatio be prescribed for ed This latest version is bigger than the model it replaces, but thanks to clever construction it is up to 100kg lighter, which benefits both efficiency and driving dynamics. The 1.4 TSI petrol engine has lots of torque to help you nip through urban traffic, but it is good for some 54.3mpg. The 1.2 TSIs are easily overwhelmed and struggle to match their claimed economy figures in the real world. The 1.6 TDI Bluemotion is the best of the diesels when it comes to fuel efficiency as it returns 88.3mpg without being woefully slow. The punchy 2.0 TDIs, meanwhile, offer plenty of pace but still return very respectable fuel economy.