If the Motor and Battery Swap stamp is giving you trouble in Forza Horizon 6, you're not the only one. It looks like a simple garage job, but the game is picky about what it counts. Throwing random parts onto an electric car usually won't do it. You need the specific conversion option, and you'll also want enough FH6 Credits ready before you start buying parts, especially if you're tempted by the stronger motor packages.

Why This Challenge Trips Players Up

The challenge sits inside the Discover Japan stamp book under car upgrades, and it rewards 10 Discover Japan points once completed. That sounds small, but those points add up when you're chasing Explorer Rank rewards. The confusing bit is the wording. "Motor and Battery Swap" sounds like any electric performance upgrade should count, but it doesn't work that way. The game wants you to use the exact Motor and Battery Swap menu inside the conversion section, not a normal power upgrade, tyre change, or tuning preset.

How to Perform the Swap

Start by getting into a compatible electric vehicle, then head to your house, festival site, or garage. Open the Cars menu, go into Upgrades and Tuning, and choose Custom Upgrade. From there, enter Body Kits and Conversions. If the car supports the feature, you'll see a Motor and Battery Swap section. Pick one of the available options, buy it, and install it. Don't back out halfway through, and don't just preview the part. The purchase has to be confirmed for the stamp to register.

Cars That Can Complete the Objective

Not every EV in the game has the right conversion menu, which is where a lot of players waste time. Good choices include the 2022 BMW iX xDrive50, the 2022 Wuling Hongguang Mini EV, and the 2022 Honda e. These are simple picks because they provide the required swap option without much messing about. If you already own one, use it. If not, buy the cheapest option that fits your budget. For the Honda e and Wuling Mini EV, you'll often see more than one motor package, with one being cheaper and the other offering a bigger jump in performance.

Getting the Stamp to Pop

After installing the swap, leave the upgrade screen and return to free roam. This part matters. Plenty of players sit in the garage wondering why nothing happened, but the notification often appears only after you're back in the open world. If it still doesn't show, check two things. First, make sure the car actually supports Motor and Battery Swap. Second, make sure you didn't install a standard upgrade by mistake. The correct option should be inside Body Kits and Conversions, not buried among ordinary drivetrain or power parts.

Final Thoughts

This is one of those small Forza Horizon 6 tasks that's easy once someone points you to the right menu. Choose a supported EV, buy the proper swap, exit the garage, and the Discover Japan points should be yours. It's also a handy excuse to try different FH6 Cars and see how electric builds feel after a proper conversion, rather than just adding a few basic upgrades and hoping the game accepts it.