The Peugot / Citroen family of HDi diesel engines are the best there is . Ranging from 1.4 to 2.0 litre they can almost match anything a petrol ( gasoline ) engine can do for acceleration . The MPG is in the mid 50’s , co2 emissions are are very low ( scoring almost the best marks on the EU table ) and oil changes are recommended at 12.000 miles. They are very quiet and give a very smooth ride. If you have not ridden in a diesel car for a few years you will be in for a big surprise with this new generation of power units.