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FH3 PerformanceIndex

The Performance Index (commonly abbreviated as P.I. or PI) is a car performance measuring system that has been used since Forza Motorsport 2.

Overview

The Performance Index displays a car's overall performance value, determined by five factors rated from 0.0 to 10.0 (with a minimum of 3.0) and usually influenced by weight:

  • Speed: How fast the vehicle can go at maximum speed. This is determined by engine power and transmission gearing. Cars that can reach 268 mph (431 km/h) or higher, like the Koenigsegg One:1 and Plymouth GTX Fast & Furious Edition, usually have a Speed rating of 10.0.
  • Handling: How well the car can handle corners. This is determined by lateral G forces at 60 mph (97 km/h) and 120 mph (193 km/h). The Formula One cars and hypercars usually have the best handling in the series.
  • Acceleration: How quickly the car can accelerate. This is determined by its 0 - 60 mph (97 km/h) and 0 - 100 mph (161 km/h) ratings. AWD cars usually have higher Acceleration values than their RWD counterparts.
  • Launch: The capability of a car launching from a standing start efficiently (e.g. with minimal to no wheelspin). AWD cars and rear-engine cars usually have the highest Launch values. Launch ratings are normally not shown in Forza Motorsport 6 and Forza Motorsport 7.
  • Braking: How well the car can brake to a stop. This is determined by distances required for 60 mph (97 km/h) - 0 and 100 mph (161 km/h) - 0.

It is shown by letters (F to A, then S, S1, S2, R, P, U, or X) and then a number starting from 100 and capping at either 999 or 1000 (e.g. P 998).

Any vehicle's performance index can be increased by applying power-improving and weight-saving upgrades. Players can also decrease their P.I. value by adding weight and using a drivetrain conversion.

In the Forza Horizon games, there are no cars ranked X 999 by default.

Classes

Class FM2 FM3 FM4 FH FM5 FH2+FF7 FM6/FM7 FH3
F - 100-200 100-200 - - - - -
E - 201-275 201-275 100-200 - - 100-300 -
D 0-400 276-350 276-350 201-300 100-400 100-500 301-400 100-500
C 401-550 351-425 351-425 301-400 401-500 501-600 401-500 501-600
B 551-700 426-500 426-500 401-500 501-600 601-700 501-600 601-700
A 701-850 501-600 501-600 501-600 601-700 701-800 601-700 701-800
S 851-998 601-700 601-700 601-700 701-800 - 701-800 -
S1 - - - - - 801-900 - 801-900
S2 - - - - - 901-998 - 901-998
R3 - 701-800 701-800 701-800 - - - -
R2 - 801-900 801-875 801-900 - - - -
R1 - 901-999 876-998 901-999 - - - -
R - - - - 801-900 - 801-900 -
P - - - - 901-998 - 901-998 -
U 999 - - - - - - -
X - 1000 999 - 999 999 999 999