Generally the rule is that they are not accurate when the car is
stationary but tend to be +/- 1/2C when you are on the move.

For the weather enthusiast they tend to be like hotel bar thermometers
on holiday and provide the normal punter with another way to irritate
greatly when talking about weather ("it was 140 C in Turkey when I was
there in March"...."my car said it was 32 C today when I was at Tesco's
in Blairgowrie" and so forth)



brian
aberfeldy


Dennis wrote:
How accurate are standard equipment car thermometers ? Mine today, in a
Rover 75 at 4PM in SW Wales, was showing 29 degrees, is this likely to
be accurate, or are car thermometers known to over or under record ?
Thanks