In article ,
tim... wrote:
Isn't that the one sort of journey where a diesel is very little if
any more economical than a petrol engine? Diesels win on economy for
stop start driving, hence the London taxi.

No, they don't

their economy is pants for stop start driving, they excel on long runs [1]

Nonsense. One reason a diesel excels in low speeds/heavy traffic is the
lack of pumping losses in the engine caused by the throttle in (most)
petrol engines. They also need less mixture enrichment than a petrol
engine when warming up, so will also use les fuel on short journeys. Even
allowing for the fact they generally take longer to warm up fully.

If you'd ever driven two similar cars round town - one diesel, one petrol,
you's know this for yourself.

--
*After the game, the King and the pawn go into the same box.

Dave Plowman London SW
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