2 KEYS The Vauxhall Astra i Design, registered in 2006, is a petrol-powered car with a 1.8-litre engine, and comes in the Design trim. This vehicle combines practicality with stylish design, making it a great option for a variety of drivers. With a boot space of 440 litres, this Astra offers considerable room for luggage, shopping, or equipment, making it more spacious than similar cars. The fuel economy is around 37 mpg, meaning fewer trips to the petrol station. The CO2 emissions are 185 grams per kilometre.