If you have been poking around the Car Upgrades section and the Motor and Battery Swap task still hasn't clicked, you are not the only one. It is one of those challenges that sounds obvious, then somehow wastes ten minutes while you try the wrong menu. The good news is that it is usually simple once you know where the game wants you to go, and it can be a neat way to save your FH6 Credits for something you actually care about.

Use a car that can actually take the swap

The first thing to check is the car itself. Not every electric vehicle in the game will give you the option you need, so this is where a lot of players get stuck. If the upgrade path is missing, the challenge will not count, no matter how many other parts you bolt on. Cars like the BMW iX xDrive50, the Honda e, and the Wuling Hongguang Mini EV are the kind of picks that usually make the job painless. If you already own one, even better. If not, grab one before you start digging through menus.

Go through the correct upgrade path

Once you are in the right car, head into your house or garage and open the Cars tab. From there, go into Upgrades and Tuning, then move into Custom Upgrade. The important part is not to rush past the category you need. You want Body Kits and Conversions, then Motor and Battery Swap. That is the specific option the game is looking for. A normal performance upgrade will not do it. Pick one of the available swap choices, confirm the purchase, and install it. The cheaper motor package is usually enough if you just want the stamp done and dusted.

Make sure the game registers it

After the swap is installed, do not sit in the garage expecting the reward to pop instantly. Back out to free roam first. That part matters more than people think. The completion notice usually appears once you return to the open world, so if nothing shows up right away, give it a moment and then leave the menu properly. If it still does not trigger, the car probably was not one of the compatible EVs, or you may have used the wrong upgrade category by mistake. It happens.

Final Thoughts

This is not the kind of challenge you need to overthink. Use a compatible electric car, buy the Motor and Battery Swap, and get back on the road so the game can record it. If you are working through the stamp book, it is a nice, low-stress way to pick up points while also learning how the conversion system works. And if you are short on cash and want to keep your garage moving without grinding forever, it can make sense to buy Forza Horizon 6 Credits and sort the swap out before you move on to the pricier stuff.