The Motor and Battery Swap objective in Forza Horizon 6 is one of those little stamp book tasks that looks easy, then somehow refuses to pop. You might spend a chunk of FH6 Credits on regular EV upgrades and still get nothing for it. That's the annoying bit. The game isn't asking you to tune the car in a general sense. It wants one very specific conversion, found in a specific menu, and only certain electric cars can use it.

Where to Find the Swap Option

Start by getting into a compatible electric vehicle, then head to your Home or Garage. From there, open the Cars tab and go into Upgrades and Tuning. Don't just jump into random performance parts, because tyres, brakes, weight reduction, or normal power upgrades won't do the job. Choose Custom Upgrade, then look for Body Kits and Conversions. Inside that section, you should see Motor and Battery Swap if the car supports it. Buy one of the available swaps, install it, and save the setup. It's a small menu path, but missing one step is usually why players get stuck.

Cars That Make the Challenge Easier

Not every electric car in the garage has the right conversion available, which is where the confusion starts. A few EVs are much safer picks if you just want the stamp done without messing about. The 2022 BMW iX xDrive50 is a strong option, and the 2022 Wuling Hongguang Mini EV is another popular choice because it's simple and cheap to work with. The 2022 Honda e also works well. If you already own one of these, use it. If not, buying the least expensive compatible car is usually better than wasting money testing vehicles that may not have the swap at all.

Which Motor and Battery Upgrade to Pick

Once you're in the right menu, you may see more than one swap package. Some cars offer a lower-powered setup, while another option gives the car a much bigger performance jump. For the stamp, it doesn't really matter which one you choose. The game only checks that you bought and installed a Motor and Battery Swap, not whether you picked the fastest version. If you're doing this purely for Discover Japan progress, grab the cheaper swap and move on. You can always come back later for a serious build if you actually enjoy driving the car.

How to Get the Stamp to Pop

After installing the swap, don't sit in the upgrade screen waiting for the reward. Back out of the garage and return to free roam. That's normally when the notification appears. If nothing shows up, go back and check two things. First, make sure the car really had the Motor and Battery Swap conversion installed. Second, make sure you didn't only buy a standard motor upgrade from another category. It's also worth saving the tune properly before leaving the menu, as backing out too quickly can sometimes make it feel like the purchase didn't register.

Final Thoughts

This challenge is worth knocking out early, even if the reward is only 10 Discover Japan points. It teaches you where some of the more interesting EV conversion tools are hidden, and it can also overlap with collection-based stamp progress if the car is new to your garage. Keep the spending sensible, pick a known compatible EV, and use the cheaper swap if you're just chasing completion. Players who are short on cash may look for ways to buy Forza Horizon 6 Credits before building more expensive cars, but for this task, a careful budget build is usually enough.