Car Years Car Type Car Model
1948‐1965 356 S1 P1
1965‐1969 912 S1 P1
1970‐1975 914/4 S1 P1
1976 912E S1 P1
1976‐1982 924 S1 P1
1978‐1995 928 S1 P1
1979‐1982 924 Turbo S1 P1
1983‐1989 944 S1 P1
1986‐1988 924S S1 P1
1986‐1989 944 Turbo S1 P1
1987‐1989 944S S1 P1
1989‐1991 944S2 S1 P1
1992‐1995 968 S1 P1
1970‐1972 914/6 S1 P1
1965‐1969 911 S1 P1
1970‐1971 911 S1 P1
1972‐1973 911 S1 P1
1974‐1977 911 S1 P1
1978‐1983 911SC S2 P2
1984‐1989 911 Carrera 3.2 S2 P2
1989 911 Speedster S2 P2
1989‐1994 964 911 Carrera S2 P2
1992‐1993 964 911 America Roadster S2 P2
1993‐1994 9 64 911 RS America S2 P2
1994 964 911 Speedster S2 P2
1995‐1998 993 911 Carrera S2 P2
1997‐2004 986 Boxster S2 P2
2005‐2012 987 Boxster S2 P2
2006‐2012 987 Cayman S2 P2
1999‐2001 996 911 Carrera S3 P3
2005‐2012 997 911 Carrera S3 P3
1976‐1989 930 911 Turbo S3 P3
1990‐1994 965 911 Turbo S3 P3
1994-1965 911 Turbo 3.6 S3 P3
1995‐1997 993 911 Turbo S3 P3
1997 993 911 Turbo S S3 P3
2000‐2004 986 Boxster S S3 P3
2005‐2012 987 Boxster S S3 P3
2006‐2012 987 Cayman S S3 P3
2002‐2005 996 911 Carrera S3 P3
2002‐2005 996 911 Carrera S S3 P3
2005‐2008 997 911 Carrera S S3 P3
2009‐2012 997 911 Carrera S S3 P3
2013‐2016 981 Boxster S3 P3
2013‐2016 981 Cayman S3 P3
2001‐2005 996 911 Turbo S3 P4
2002‐2004 996 911 Turbo X50 S3 P4
2005 996 911 Turbo S S3 P4
2007‐2013 997 911 Turbo S3 P4
2010‐2013 997 911 Turbo S S3 P4
2005‐2008 997 911 Carrera S X51 S4 P4
2010‐2012 997 911 GTS S4 P4
2011‐2012 997 911 Speedster S4 P4
2012‐On 991 911 Carrera S4 P4
2010‐2012 987 Boxster Spyder S4 P4
2011‐2012 987 Cayman R S4 P4
2013‐2016 981 Boxster S S4 P4
2013‐2016 981 Cayman S S4 P4
2014‐2016 981 Boxster GTS S4 P4
2014‐2016 981 Cayman GTS S4 P4
2017‐On 718 Boxster S4 P4
2017‐On 718 Cayman S4 P4
2020 718 Boxster T S4 P4
2020 718 Cayman T S4 P4
2012‐On 991 911 Carrera S S4 P4
2015‐On 991 911 Carrera GTS S4 P4
2018‐On 991 911 Carrera T S4 P4
2020‐On 992 911 Carrera S4 P4
2020‐On 992 911 Carrera S S4 P4
2016 981 Boxster Spyder S4 P4
2017‐2019 718 Boxster GTS S4 P4
2017‐2019 718 Cayman GTS S4 P4
2017‐On 718 Boxster S S4 P4
2017‐On 718 Cayman S S4 P4
2020‐On 718 Boxster GTS 4.0 S4 P4
2020‐On 718 Cayman GTS 4.0 S4 P4
2021‐On 718 Boxster Spyder S4 P4
2014‐2019 991 911 Turbo S5 P5
2014‐2019 991 911 Turbo S S5 P5
2021‐On 992 911 Turbo S5 P5
2021‐On 992 911 Turbo S S5 P5
2004‐2005 996 911 GT3 S5 P5
2006‐2011 997 911 GT3 S5 P5
2006‐2011 997 911 GT3RS S5 P5
2008‐2012 997 911 GT2/GT2RS S5 P5
2015‐2016 981 Cayman GT4 S5 P5
2016 991 911 R S5 P5
2002‐2005 996 911 GT2 S5 P5
2014‐On 991 911 GT3 S5 P5
2016‐2019 991 911 GT3RS S5 P5
2018‐2019 991 911 GT2RS S5 P5
2022-On 992 911 GT3 S5 P5
2023-On 992 911 GT3RS S5 P5
2022-On 992 911 Sport Classic S5 P5
2023-On 992 911 Dakar S5 P5
2020‐On 718 Cayman GT4 S5 P5
2022-On 718 Cayman GT4RS S5 P5
2003‐2010 Cayenne S S1 P1
2003‐On Cayenne S1 P1
2013‐2018 Cayenne Diesel S1 P1
2011‐On Panamera S1 P1
2003‐On Cayenne Turbo S2 P2
2008‐On Cayenne GTS S2 P2
2009 Cayenne Transsyberia S2 P2
2011‐On Cayenne Hybrid S2 P2
2011‐On Cayenne S S2 P2
2014‐On Macan S2 P2
2014‐On Macan Turbo S2 P2
2011‐On Panamera S S2 P2
2011‐On Panamera Turbo S2 P2
2012‐On Panamera Hybrid S2 P2
2013‐On Panamera GTS S2 P2
2004‐2005 Carrera GT S5 P5
2014‐2015 918 S5 P5
2020‐On Taycan S5 P5
All <2500 Non‐Turbo I1 M1
All 2500‐3400 Non‐Turbo I1 M1
All <2700 Turbo I1 M1
All > 3400 Non‐Turbo I1 M1
All >2700 Turbo I1 M1
NON Porsche X X
Notes on Classes
No trucks or non-Porsche SUVs are permitted at IRPCA autocross events. If a vehicle is deemed too "high profile" (i.e. top heavy), we reserve the right to eliminate the vehicle from further runs and entry.
Definition of Improved
Improved, for IRPCA Autocross purposes, includes; massive changes in weight, suspension from a later vehicle (i.e. coilovers on an early 911).
Definition of Modified
Modified, for IRPCA Autocross purposes, includes; Cars that are prepared for POC or PCA Club racing, Cars prepared for other racing series, and all cars not licensed for street use.
Definition of "R" tires
R rated tires, for IRPCA Autocross purposes, includes; Any DOT tire that has a wear rating of 130 or less. Any Non DOT tire will be classed as an "R" tire.
All cars with engine transplants will be considered as the year, make, and model of the engine.
Classification is the responsibility of all drivers. If there are disputes as to the class of a car, the final decision will be made by the Autocross Chair, the Safety Chair, and the Region President.
A car will go through a tech inspection and be classified at the first event that car is run. If any equipment changes to the car are made after that point, it is the duty of the driver to have the car "re-classed," or risk losing any accumulated points after the changes are made. A driver must attend, and drive in, 4 events to be eligible for season points. After the 4th event, standings for all classes will be available on the IRPCA website. Everyone that gains points for the season is eligible for year in awards. For any driver that changes class during the season, 1 point will be transferred to the new class for each prior event that was attended that season. Full points will not transfer to the new class (e.g. Billy Bob has 24 points in P2 class, but does modifications to his car after the fourth event that bump him to P3 class. He would now have 4 points in P3 class, not 24).