Thanks Albert. I'll bear those points in mind when I book it in for the 1st service. POSTSCRIPT: Felt sufficiently new-car-hyper today to go back to the dealer and ask them to check out the engine noise. Of course, it was nowhere near as apparent as it had been, but the workshop engineer took it for a 3 minute spin with me in the passenger seat, and drove the engine a lot harder than I'd been doing and it sounded sweet enough at high revs. So if there is a prob. I don't think it's engine related. Possibly some body work that reverberates in low temps. I'll relax now till the first service. Check out this piece from The Guardian Tues April 8th: http://www.guardian.co.uk/g2/story/0,3604,...,932470,00.html