Fuel economy and exhausts
The Clio is quite simply very thrifty. Being small and lightweight clearly helps. A full tank shall get 400+ miles which is about 50 to the gallon. It does however pay to have perfectly serviced spark plugs (mind the gap!) and leak-less exhaust. The original exhaust provides a very acceptable level of cabin noise and in fifth gear you can get up hills despite the 1.2 L engine capacity. A recent MOT failure was the exhaust and the emissions: Repair immediately (major defects): Exhaust Lambda reading after 2nd fast idle outside specified limits A replacement centre section pipe solved this. It is worth appreciating how the momentum of exhaust gases in a long tube helps suck residual fumes out of the engine at bottom-dead-centre so that the next burn is that little bit cleaner, and with luck, a slight vacuum awaits the next charge. Changing the engine oil does not guarantee an improvement of emissions but healthy spark plugs help plus you get extra power. Every little helps wit...