Forza Horizon 6

Which Forza Horizon 6 Cars Have Each Rare Upgrade?

Most Forza Horizon 6 upgrades are available on nearly every car - but a few are fitted to only a handful. Here's every rare upgrade slot and the exact cars that can install it.

Electric

Which FH6 Cars Have Motor and Battery Upgrades? 5 cars

The EV equivalent of engine upgrades - stronger motors and a higher-output battery. Only FH6's factory electric cars have this slot.

Electric conversion

Which FH6 Cars Have a Motor and Battery Swap? 3 cars

Drops a far more powerful motor-and-battery package (up to the 1893BHP Motor) into the car - one of the rarest conversions in Forza Horizon 6.

Body kit

Which FH6 Cars Have Roo Bars? 2 cars

A rugged bull-bar fitted to the front - an off-road styling option found on just one car in Forza Horizon 6.

Rotary engine

Which FH6 Cars Have Rotors / Compression (Rotary) Upgrades? 5 cars

The rotary engine's take on pistons and compression - upgraded rotors and apex seals. Standard on FH6's factory rotary cars.

These are the factory rotary cars. One more can run rotor upgrades after a rotary engine swap.

Motorsport

Which FH6 Cars Have a Restrictor Plate? 17 cars

Controls the factory air restrictors on race-homologated cars. These cars carry the slot from the factory.

These cars come with a restrictor plate in their stock upgrade menu. Many more can fit one after a race engine swap.

Frequently Asked Questions

What are the rarest upgrades in Forza Horizon 6?

Only a handful of FH6's 600+ cars can fit certain upgrades: the Motor and Battery slot, the Motor and Battery Swap, Roo Bars, rotary Rotors / Compression and the Restrictor Plate. This page lists every car for each.

What is a Motor and Battery Swap in FH6?

It's the electric equivalent of an engine swap — dropping a far more powerful motor-and-battery package (up to the 1893BHP Motor) into a compatible car for a huge power and PI jump.

Why can only some cars fit these upgrades?

These slots are tied to a car's stock configuration: EV parts only appear on factory electric cars, rotor upgrades only on rotary engines, and restrictor plates only on race-homologated cars.

Do these upgrades help with the Discover Japan Journal?

Yes — several Discover Japan Journal stamps ask you to install rare parts like these. Because each list is sorted cheapest-first, you can grab the most affordable eligible car and earn the stamp for the fewest credits.

How do I install a rare upgrade?

From your garage, open Upgrade & Tune → Custom Upgrade for a compatible car. If the car supports the part it appears in the matching upgrade category; cars not on these lists won't show the option.