The Motor and Battery Swap in Forza Horizon 6 is one of the more annoying Discover Japan upgrade objectives because it looks like it should be in the normal EV upgrade menu. The actual swap is usually found under Body Kits and Conversions, which is why upgrading every EV battery and motor part can still leave the objective unfinished.

For more Forza Horizon 6 guides, check the main Forza Horizon 6 hub.

How To Do Motor And Battery Swap In Forza Horizon 6

To complete the Motor and Battery Swap objective in Forza Horizon 6, use an EV that has the swap available, go to Upgrade Shop, open Body Kits and Conversions, choose Motor and Battery Swap, install the swap, then save the upgrade setup.

The key detail is the menu. The Motor and Battery Swap is a conversion, not the same thing as the regular Motor and Battery upgrade tab. That is the part causing most of the confusion with the Discover Japan objective. A normal motor and battery upgrade can improve the car, but it may not count as the swap objective because the game is looking for the conversion upgrade.

The cleanest route is to buy or use a known working EV, open the upgrade menu, go straight to Body Kits and Conversions, and look for Motor and Battery Swap there. After installing it, save the setup before backing out. Do not just buy battery or motor parts from the normal upgrade section and assume the Collection Journal will count it.

Best Cars For Motor And Battery Swap

The safest cars to try for the Motor and Battery Swap objective are the 2023 Hyundai IONIQ 5 N, GMC Hummer EV, BMW iX xDrive50, 2022 Honda e, and Wuling Hongguang Mini EV because players have reported these cars working for the Discover Japan upgrade objective.

Car	Why It Works	Best Use
2023 Hyundai IONIQ 5 N	Can complete both the Motor and Battery upgrade and the Motor and Battery Swap when done from the correct menus.	Best all around pick for finishing both EV upgrade objectives.
GMC Hummer EV	Works for the swap when using Body Kits and Conversions, but may need the upgrades done one at a time.	Best fallback when other EVs are not counting.
BMW iX xDrive50	Reported to work through the Motor and Battery Swap option.	Good simple EV option if already owned.
2022 Honda e	Reported to work for the battery related Discover Japan upgrade tasks.	Good cheap style EV option to check.
Wuling Hongguang Mini EV	Reported to have the needed option under Body Kits and Conversions.	Good budget style option if available.

The 2023 Hyundai IONIQ 5 N is the best first choice because it has been used to complete both categories when the upgrades are installed in the right order. It is also cheap enough from the Autoshow compared to throwing credits at random EVs and hoping the menu appears. For this specific objective, that is the whole win. Stop buying mystery cars like the game is running a very small electric casino.

The GMC Hummer EV is another strong fix when the objective refuses to pop. For the Hummer, install the swap from Body Kits and Conversions, save it, then go back in and handle the other motor and battery option separately if needed. Doing both pieces one at a time helps avoid the Collection Journal failing to recognize the correct step.

Motor and Battery Swap is found in the Upgrade Shop under Body Kits and Conversions on cars that support the conversion.

This is the part that makes the objective feel bugged. The normal Motor and Battery menu is not the same thing as the Motor and Battery Swap conversion. The wording is close enough to bait a lot of wasted upgrades, but the game is separating a part upgrade from a full conversion.

Use this path for the swap:

Go to Upgrade Shop.
Open Body Kits and Conversions.
Select Motor and Battery Swap.
Install the available swap.
Save the setup before leaving the menu.

On the 2023 Hyundai IONIQ 5 N, the regular Motor and Battery upgrade can also appear under Motor and Battery, then Motor and Battery, then Race Motor and Battery Parts. That can help with the other EV upgrade objective, but the swap objective needs the Body Kits and Conversions route.

For players also working through swap related upgrades in general, the Forza Horizon 6 engine swap list is the better follow up once the Discover Japan EV objective is done.

Motor And Battery Upgrade Vs Motor And Battery Swap

The Motor and Battery upgrade is a normal performance part, while the Motor and Battery Swap is a conversion found under Body Kits and Conversions.

That difference is the reason the objective can look broken. A player can install a motor and battery part, drive the car, buy more EV upgrades, and still get no Discover Japan progress because the required action was never the regular upgrade in the first place.

Upgrade Type	Menu Location	What It Counts For
Motor and Battery Upgrade	Motor and Battery menu	The regular EV motor and battery upgrade objective.
Motor and Battery Swap	Body Kits and Conversions menu	The Motor and Battery Swap Discover Japan objective.

The names are similar, but the Collection Journal treats them as different upgrade types. The swap has to come from the conversion menu. If that menu does not show on the car, that specific car probably is not the best pick for the objective.

GMC Hummer EV Fix For Motor And Battery Swap

The GMC Hummer EV can fix the Motor and Battery Swap objective by installing the conversion from Body Kits and Conversions, saving the setup, then returning to install the other motor and battery option separately if needed.

The Hummer EV is useful because multiple players have reported it working after other EVs failed to count. The important part is not rushing both upgrade types at once. Do the swap, save, back out, then go back into the menu and handle the other related upgrade if the Discover Japan section still needs it.

A good Hummer EV order is:

Buy or select the GMC Hummer EV.
Go to Upgrade Shop.
Open Body Kits and Conversions.
Install Motor and Battery Swap.
Save the setup.
Reopen upgrades and install the regular Motor and Battery upgrade separately if that objective is still missing.
Save again.

This is not the most elegant solution, but it works because it forces the game to register each upgrade step on its own. For an objective with this much menu confusion, boring and reliable beats clever.

Why Motor And Battery Swap Is Not Counting

Motor and Battery Swap usually does not count because the wrong upgrade menu was used, the car does not have the conversion option, the setup was not saved, or the regular Motor and Battery upgrade was installed instead of the swap.

The game is not checking for any EV upgrade. It is checking for a specific conversion type. That means installing Race Motor and Battery Parts can still leave the swap objective unfinished. It also means a car can have EV upgrade parts without having the exact conversion menu needed for this Discover Japan task.

The other common issue is upgrade order. On some cars, doing the swap first can hide the normal motor and battery upgrade option until the swap is removed. The safer route on the Hyundai IONIQ 5 N is to complete the regular Motor and Battery upgrade first, save it, then do the Motor and Battery Swap from Body Kits and Conversions.

Problem	Fix
Installed regular EV parts, but no progress	Use Body Kits and Conversions, then install Motor and Battery Swap.
Car has no Body Kits and Conversions option	Switch to a known working car like the Hyundai IONIQ 5 N, GMC Hummer EV, BMW iX, Honda e, or Wuling Mini EV.
Swap installed, but objective still missing	Save the setup, back out, reload the car, and check the Collection Journal again.
Regular upgrade disappeared after swap	Remove the swap, install the regular upgrade first, then install the swap after.
Hummer EV still acting weird	Do each upgrade one at a time and save after each install.

Quick Fix Checklist For Discover Japan

The fastest fix is to use the 2023 Hyundai IONIQ 5 N or GMC Hummer EV, install the regular Motor and Battery upgrade first if needed, save, then install Motor and Battery Swap from Body Kits and Conversions and save again.

Use a known working EV instead of testing random cars.
Check Body Kits and Conversions for the actual swap.
Do not confuse Motor and Battery parts with Motor and Battery Swap.
Save after each install.
Install the regular upgrade before the swap when using the Hyundai IONIQ 5 N.
Install each Hummer EV upgrade separately if the journal refuses to update.
Reopen the Collection Journal after backing out of the upgrade menu.

Once the objective is finished, there is no reason to keep throwing credits at EVs just to test menus. Put the credits into actual builds instead. The best cars in each class guide is a better place to spend time after the upgrade objective is cleared.

Final Blurb

The Motor and Battery Swap objective in Forza Horizon 6 is mostly a menu problem. The swap is a conversion found under Body Kits and Conversions, while the regular Motor and Battery upgrade is a separate part upgrade. Installing the wrong one can make the Discover Japan objective look bugged even when the car was upgraded correctly in every other way.

The cleanest solution is to use the 2023 Hyundai IONIQ 5 N first, install the regular Motor and Battery upgrade if needed, save it, then install the Motor and Battery Swap from Body Kits and Conversions. If that still refuses to behave, use the GMC Hummer EV and save each upgrade step separately. It is a weird little objective, but once the menu difference clicks, the fix is simple enough. The hard part was trusting Forza’s upgrade wording, which was brave and clearly punished.

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