Just spent over £75 in Tescos filling up the tank and thought I should check the tyre pressures. Not only does the machine now require 20p pieces to work - it needs lots of em to check all tyres. First 20p ran out after checking the two front tyres - and I wasn't hanging about either. Morrisons next time for me - though you do need to spend over £15 before they'll give you the code for the machine. Filled up my motorbike one day, £14.23 (that was from empty to full) and they refused to give me the code for the air line. Bring back all the independent petrol stations with free air lines.