As well as not getting a spare wheel, you also do not get a jack, a tray to keep it and the tools in, the yellow plastic tool to pull off the chrome wheel bolt covers and a wheel bolt wrench - the total cost inc the wheel/tyre will be about £200 from the dealer. If we change our 2011 C4 for another one, I intend to put the foam spray, compressor and expanded plastic wheel well filler back in and keep the spare, etc for the replacement car. On the 1.6 hdi engine, there is a 90 bhp and a 110 (or 115) bhp engine. Fuel economy figures on both seem to be similar but we have had the 110 one and it goes well. On the 2011 on C4 you need to take a bit of time to get used to the poor visibilty - the door mirrors are not good, the headrests are large, the rear windows are tinted and the pillars are wide. The key blade is at 90° to usual so this takes a bit to get used to. Other than that it is a good, comfy car suitable for long motorway trips and we get around 60 mpg or more on motorways, probably nearer 50 elsewhere. On the 1.6 hdi services are 12500 miles or 2 years if sooner but newer ones may be 1 year. The tyres are a common size and decent ones such as Michelins are only about £75 each and ours lasted 41k miles. On the Technical Section there is a Common Problems pinned post to look at, but check the bonnect for paint problems which some have reported.