Forza Horizon 6 Engine Swap List & Costs

Forza Horizon 6 does not exist yet, so there is no official engine swap list or cost table. This article explains how engine swaps have worked in recent Forza Horizon games (FH4 and FH5) so you know what to expect when the next game arrives.

How Engine Swaps Work in Forza Horizon

In Forza Horizon 4 and 5, engine swaps are part of the Upgrade Shop. You pick a car, go to the “Engine” category, and choose from a list of available donor engines. Each swap has a fixed credit cost and changes the car’s performance index (PI), which affects matchmaking in online races. Swaps are not reversible for free—you pay again to revert to the stock engine.

The key rule: every car has its own unique swap list. A Ford Focus RS and a Toyota Supra share almost no swap options, even if both are A-class cars. The list depends on the car’s original engine layout, drivetrain, and body style.

Typical Engine Swap Options

Across FH4 and FH5, most cars have 3–6 swap choices. Common categories include:

Same-family upgrades: A bigger version of the stock engine (e.g., a 2.0L to a 2.3L).
V8 options: Usually a 6.2L V8 (like the Corvette’s) or a 7.2L racing V8.
Racing V12: The 8.9L racing V12 is a popular end-game swap for high-power builds.
Electric conversion: FH5 added a few electric swaps (e.g., for the 1968 Dodge Charger).
Rotary: The 2.6L 4-rotor racing engine appears on some JDM cars.

Each swap changes weight, power curve, and sound, not just the top speed.

Costs of Engine Swaps in FH5

In Forza Horizon 5, engine swap costs are fixed per car, not per engine. The price ranges from about 5,000 to 150,000 credits. Here are typical figures (from the game’s files):

Small economy cars (e.g., Honda Civic): ~5,000–20,000 CR
Mid-range sports cars (e.g., Nissan 370Z): ~20,000–50,000 CR
High-end supercars (e.g., Lamborghini Aventador): ~50,000–150,000 CR

These are examples, not a complete list. The cost does not depend on which engine you choose—it’s the same price for any swap on that car. Upgrading the new engine (e.g., adding turbo) costs extra on top.

How to Choose the Right Swap

Pick a swap based on your goal:

For dirt/off-road: A V8 with high torque is often better than a high-revving V12.
For speed zones: A racing V12 gives top-end power but adds weight.
For drifting: A high-revving rotary or a turbo 4-cylinder keeps the car light and responsive.
For PI limits: Some swaps lower the PI, letting you add other upgrades while staying in a class.

Always test-drive after a swap. The car’s handling changes dramatically—a V12 in a Miata is fast but hard to control.

Common Problems and Misconceptions

One common mistake is assuming a bigger engine is always better. In FH5, a 6.2L V8 in a lightweight car can make it undriveable in tight corners. Another issue: engine swaps often change the car’s sound, and some players dislike the generic V12 sound.

Also, you cannot swap engines between cars of different brands in the standard game—no LS-swapping a Ferrari. The only way to get unusual combinations is through mods on PC, but those break online play.

Forza Horizon 6: What We Know

As of 2025, Playground Games has not announced FH6. No official engine swap list exists. Based on the series’ history, the next game will likely keep the same upgrade system, possibly with more electric swaps and new engines from cars introduced in the game. The costs will probably stay in the same range, adjusted for inflation in the game’s economy.

Frequently Asked Questions

Can I swap any engine into any car in Forza Horizon?

No. Each car has a fixed list of swaps. You cannot put a Ferrari engine into a Ford Mustang, for example. The list is determined by the car’s model and drivetrain.

How much does an engine swap cost in FH5?

It varies by car, from about 5,000 to 150,000 credits. The cost is fixed per car, not per engine. You can see the exact price in the Upgrade Shop before you buy.

Is it better to swap or just upgrade the stock engine?

It depends. Swapping can give you a better power-to-weight ratio or a different power curve, but it often adds weight and cost. For many cars, upgrading the stock engine is cheaper and keeps the car’s character.

Do engine swaps affect the car’s sound?

Yes. Each engine has its own sound. Some swaps sound worse than the stock, especially the racing V12 on small cars. You can preview the sound in the garage, but not during a test drive.

Will FH6 have the same engine swap list?

No one knows. It will likely be similar, but with new cars and possibly new engines. The list will be different for each car, so there’s no single list to memorize.

Method: the standard formula for this calculation, rounded as each result states. See how the calculators work or report an error.

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