Howard Ward:I'm currently in the market to replace my E320cdi (as a long distance cruiser in Europe) and I think I've narrowed the choice down to the XF, the Citroen C6 and now the C5. All appear to have the same 2.7 engine and transmission but can someone explain how the XF significantly out-performs the Citroens in acceleration, CO2 and consumption - particularly bearing in mind that the C5 is about the same weight as the XF. The C5 is actually the lightest of the lot but accelerates the slowest. It seems unlikely that the French are being overly modest so are Jaguar massaging their figures? Should I wait for the uprated version of the engine, which I believe may be imminent, assuming that it will be available in whichever models currently use the 2.7?
I've owned a Benz with the same diesel lump as in your E, and I've owned both the C6 and the C5. I actually went from the C6 to a C5 Tourer recently because - don't tell anyone - the C5 is better. Although it's a 'proper' Citroen, and so many aspects of it are plain works of art, the C6 still exhibits a longstanding trait of air-sprung French cars, that of a poor low speed ride. The car as standard comes with supersize wheels meaning the car gets to feel like an Audi below 30mph. I'm exaggerating a little, but it's incongruous on a car that supposedly majors on comfort.
The 2.7 litre engine is delightfully linear and well-matched with the Citroen character, but you'll find it less powerful and - paradoxically - less economical than the Benz lump. You will also be hard pushed to find a C5 2.7 for a test drive because it makes the least sense in current economic conditions. Nobody's going to buy one, so why would any dealer run one? I'd ordered the biggest engine with all the toys, that being my M.O., but the cost was pushing £30K and I couldn't bring myself to do it, knowing the car would be worth £15K this time next year.
I went for the 2.0 instead - for whatever reason the 2.2 is not available with an auto box - and I haven't regretted it. Excellent build quality, supremely quiet, and much better sorted for long distance comfort than either my W220 or W221. It also has a significantly better satnav than the antique in the C6, though it still won't accept postcode destinations and the interface overall is confusing.
The one problem you will run into is badge snobbery, but that's a peculiarly British thing. Just get anyone who turns up their nose to compare the joke-grade plastics in modern BMWs (and particularly in MINIs) with any recent Citroen. That'll keep 'em quiet!