Car Classes Explained — Forza Horizon 2 Guide

Forza Horizon 2 categorizes cars into performance classes based on their 'Performance Index' (PI). This PI is a numerical value that represents a car's overall performance potential, influenced by its stock stats and any applied upgrades. Understanding these classes is vital for competitive racing, as events are often restricted to specific classes. The classes range from D (lowest performance) to X (highest performance). Here's a breakdown:

• D Class: Entry-level, often classic or economy cars.
• C Class: Slightly more powerful, often hot hatches or older sports cars.
• B Class: Good balance of power and handling, many popular sports cars.
• A Class: High-performance sports cars and supercars.
• S1 Class: Very high-performance supercars and hypercars.
• S2 Class: Extreme performance, often track-focused hypercars.
• X Class: Reserved for highly modified, unrestricted vehicles (rare in events).

When upgrading a car, your goal is often to maximize its performance within a specific class limit for an event. For example, if an event is 'A Class Max', you'll want to upgrade your car as close to the top of A Class (PI 700) as possible without exceeding it.