Citroen claims fuel economy has been improved by up to 15 per cent. All engines in the Relay range are 2.2-litre HDi units, and in our 130 variant – the mid-way point in a range that also includes 110 and 150bhp models – there’s an official 38.2mpg combined economy rating. Although we couldn’t quite replicate that number, an indicated 35mpg on the trip computer was pleasingly close.