Forza Horizon 6 EV Motor Swap Guide: The New Electric System Explained
Forza Horizon 6's new electric motor and battery swap system explained. How EV swaps differ from engine swaps, when to use them, and how to tune the result.
A Whole New Upgrade Path
Forza Horizon 6 added something the series never had: electric motor and battery swaps. You can take a combustion car and convert it to electric power, or upgrade the EVs that ship electric from the factory. It’s a genuinely new system, and because it’s so fresh, almost nobody has written it up properly yet. That makes it worth learning early, while most lobbies are still figuring it out.
This guide explains what the EV swap is, how it differs from a normal engine swap, and how to tune the result. The exact numbers are still settling as the community tests, so I’ll stick to the system and the directions to push your settings rather than quoting values that’ll be stale in a week.
What the EV Swap Actually Is
An EV swap replaces the gasoline engine (and its drivetrain assumptions) with an electric motor, and pairs it with a battery. In the upgrade menu you choose a motor and a battery, and each choice trades off differently:
- The motor sets your power and torque. Electric motors deliver torque instantly and across almost the entire rev range, which is completely different from a combustion engine’s narrow power band.
- The battery affects weight and, in turn, your power-to-weight ratio and handling. A bigger battery can mean more capacity but more mass low in the car.
Because there’s no traditional engine note, no turbo lag, and no shifting drama, an EV build feels different to drive. The power is just there the instant you touch the throttle.
How EV Swaps Differ From Engine Swaps
If you’ve tuned combustion cars, throw out a few assumptions before you start.
- Instant torque, flat delivery. A gas engine makes you manage a power band — keep the revs in the sweet spot, time your shifts. An EV motor pulls hard from zero with no band to manage. That changes gearing and changes how the car puts power down off the line.
- Aspiration is gone. No turbo, no supercharger, no centrifugal. You don’t pick how the power arrives because it always arrives instantly. That removes a whole layer of decisions and one whole source of lag.
- Weight lives in the battery. On a combustion swap you worry about a heavy donor motor over the nose. On an EV build the battery is your main mass, and where it sits affects balance. Heavier batteries can hurt your PWR, so check the numbers when you choose one.
- Traction is the real challenge. Instant torque means instant wheelspin if the car can’t put it down. EV builds often want more attention on tires, differential, and sometimes an AWD conversion than an equivalent gas build.
How to Do an EV Swap
Open Garage → Upgrades & Tuning. The electric swap options appear in the engine/conversion area, alongside the combustion swaps. Pick a motor and a battery, and the menu shows the resulting power, torque, weight change, and PI cost before you commit, exactly like a normal swap. Read those numbers and compare power-to-weight before and after — an EV swap that tanks your PWR with a heavy battery isn’t worth it just because it’s new.
Not every car will offer the conversion, and the EVs that come electric from the factory have their own motor and battery upgrade choices rather than a from-scratch swap.
Tuning an Electric Build
The slider names are the same as any tune; the priorities shift.
Gearing
With instant torque and no power band to chase, gearing is more about top speed and traction than about keeping revs in a sweet spot. A taller final drive can stop the car from spinning its tires off the line, since the torque hit is so immediate. Tune for clean power delivery first, terminal speed second, and watch the telemetry for early wheelspin.
Traction Control
This is the big one. Instant torque overwhelms tires easily. Address it from a few angles:
- Tires first. Better compound tires are the cheapest way to handle the torque. Spend PI here before chasing more power.
- Differential. A higher acceleration lock keeps the driven wheels working together under power, which steadies the car when the motor dumps torque on corner exit.
- Consider AWD. Because EVs hit so hard, an AWD conversion often pays off, sharing the torque across four tires instead of frying two. Weigh the added weight against the traction gain.
Suspension and Weight
The battery sits low, which can actually help your center of gravity, but it’s heavy, so you may want slightly stiffer springs to control the mass through quick direction changes. Otherwise the usual rules from the tuning guide apply — soften where you want grip, firm up where you want response.
Why Learn This Now
One more reason to experiment: the EV system interacts with the rest of FH6’s customization in ways nobody has fully charted. A motorcycle-engine Kei car and an EV-converted Kei car both chase a power-to-weight advantage, but they get there completely differently, and the lower classes are where these light, cheap-to-build cars are most competitive. There’s room to find a combination that just works and that the leaderboards haven’t caught up to.
EV swaps are a blue-ocean topic in FH6. The combustion meta is well-trodden, but the electric system is new enough that the optimal motor-and-battery combos for each class are still being mapped. If you want an edge — or just want to build something most lobbies haven’t figured out — convert a light car to electric, sort out the traction, and see what the instant torque does. Use Find Tuning Setups in-game to spot early EV tunes from other builders, and treat your own runs as the real test data.