In 2012 there will be a reduction in the permitted quantity of tyres
and for WRC cars there will be a maximum of seven tyre changes on any rally with a maximum of five tyres per change (35 tyres + 5 tyres for Shakedown per rally by comparison with 48 + 6 in 2011).
Each Manufacturer or WRC Team must use no more than three engines per seasonally allocated car number.
A Manufacturer may apply to the FIA for a waiver to use one additional engine per manufacturer team car during the year, giving full justification for the request. Once sealed, this engine will be assigned to a seasonally allocated car number. In the case of engine failure between scrutineering and the first Time Control it is permitted to replace the engine but a 5-minute penalty will be applied. In this case, the original engine may not be further used during the season. At any time, no more than two engines may be sealed for seasonally allocated car numbers. Only in the case when a car does not finish a rally, may an extra engine per seasonally allocated car number be allowed without incurring a penalty. No more than two extra engines per seasonally allocated car number and per season may be sealed without incurring any penalty. When the extra engine is used, the engine which was fitted on the retired car may not be used anymore during the season.
Exceptionally, in the first Championship year of homologation, a new manufacturer may register as a WRC Team and score Manufacturers' points on a maximum of seven nominated rallies.
Amendments have been made to the Priority status of drivers: P1 drivers are those in World Rally Cars who have been nominated by a registered Manufacturer or WRC Team for the purpose of scoring points for the FIA World Rally Championship for Manufacturers, or have been entered by a Manufacturer or WRC Team but not for scoring points in the Manufacturers' Championship. A driver may also be awarded P1 status if they have been classified among the first 10 in a World Championship rally during one of the two previous Championship years or during the current Championship year.
P2 status relates to drivers of World Rally Cars who have won a support Championship in either of the two previous Championship years, or those proposed by an organiser to the FIA whose entry is supported by a letter from the driver's ASN and whose results justify P2 status.
P3 drivers are those who are eligible to score points on Support Championship rallies, or drivers of Classes 2 or 3 proposed by an organiser to the FIA and whose entry is supported by a letter from the driver's ASN and whose results justify P3 inclusion. As directed by the FIA, these drivers must then comply with the rules pertaining to the SWRC or PWRC.
The surfaces of an event may be mixed but must remain the same between two overnight 45' services.
Within a special stage these road surfaces must not be mixed, however for the use of limited sections of asphalt on gravel stages, a waiver may be sent to the FIA.
Throughout the rally, both crew members must have a valid driving licence.