X (999+ PI) is one of the most competitive tiers in FH5 online racing. These five cars post the highest Acceleration ratings in class.
X8555 
The undisputed Acceleration champion in this group. A natural advantage that's hard to overcome, even with a perfect tune on a weaker platform.
X7555 
A strong Acceleration contender that's remarkably close to the top. Balanced and versatile across multiple track types.
X7555 
Pairs high Acceleration with competitive all-around performance — a rare combination. An excellent all-rounder that doesn't force trade-offs.
The rankings above are based on stock performance data — every car shown is completely untuned, straight from the Autoshow. If a car ranks #1 for Acceleration in stock form, it has a natural advantage that's hard to overcome.
At ForzaLabs, we built an automated system that collects every upgrade and tuning option for every car in Forza Horizon 5 — thousands of parts across hundreds of vehicles.
In competitive online racing, nobody runs stock. The right combination of upgrades can transform a mid-tier car into a class leader. The question isn't "which car is best stock" — it's "which car is best after the optimal tune for my race?"
That's exactly what our full database answers. Enter your race restrictions — class limit, drivetrain rules, weather conditions — and we'll show you the optimal car and build.
Stop guessing which car to bring. Search our complete upgrade database to find the highest-performing build for any class, any restriction, any event.
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Browse all 3 X cars, filter by any stat or price — or check out our other rankings.
In Forza Horizon 5, the Acceleration stat reflects how quickly a car reaches top speed. Tracks with frequent braking zones reward cars that recover speed fastest.
All five cars on this list are RWD. This layout dominates the Acceleration rankings thanks to its mechanical advantages.
If you're just starting out, the 2014 Alfa Romeo 4c at 250,000 CR is a strong entry point. The 2023 Chevrolet Corvette Z06 leads at 7.5 Acceleration, but costs 250,000 CR.
