The Jerez circuit is the location for the circuit debut of most of the 2012 Formula 1 cars. The Ferrari should have run for the first time as usual in Italy but it was snowed in whilst the Mercedes and Marussia will debut at the second test in Barcelona. Finally HRT which has never actually run in pre-season testing with a new car will keep the tradition up by running its 2011 car at Jerez for two days. The cars will run between 0900 and 1700 on Tuesday, Wednesday, Thursday and Friday. Temperatures are expected to range between 4 and 19 degrees centigrade, according to current forecasts