With the launch of Forza Horizon 6 taking us to the neon-drenched streets of Tokyo and the rocky mountain passes of Mt. Haruna, players are realizing that building a massive garage requires a lot of credits and skill points. Open world farming is the backbone of progression in Horizon games, and the mechanics in FH6 have a few specific wrinkles you need to exploit if you want to maximize your efficiency.
To farm efficiently, you shouldn't just grab the fastest hypercar in your garage. You need specific vehicles that feature the Multi Maxer perk (which bumps your maximum skill multiplier up to 9x) and the Where The Fun Begins perk (which causes your multiplier to build up to 2.5 times faster).
Here is a breakdown of the absolute best cars for open-world skill farming in FH6, backed by the numbers, to help you break the game’s economy wide open.
1. 1998 Subaru Impreza 22B-STI
For the vast majority of players, the Subaru 22B-STI is the undisputed king of early-to-mid-game farming. It is cheap, highly accessible, and features a Car Mastery tree that allows you to easily stack point modifiers.

+--------------------------------------------------------+
| 1998 Subaru Impreza 22B-STI Farming Stats              |
+--------------------------+-----------------------------+
| Max Skill Multiplier     | 9x (With Multi Maxer)       |
| Multiplier Build Speed   | 2.5x Faster                 |
| Optimal Farming Biome    | Bumpy Forests / Open Fields |
| Max Points Per Chain     | 500,000 (Gives 10 Skill Pts)|
+--------------------------+-----------------------------+

Why it works:
Because every 50,000 skill points earn you one Skill Point (capping out at 10 Skill Points per individual chain at 500,000 total score), you only need a base score of roughly 55,555 x 9 to max out your return.
If you take the 22B to a bumpy forest or a custom EventLab setup, you can combine drift, wreckage, and air skills effortlessly. Its rally-bred suspension absorbs uneven terrain, meaning you rarely lose your chain due to an unexpected flip or a hard crash into a rock. A quick 25 to 30-second run through a dense prop area can instantly net you the full 500,000 points.
2. 1984 Peugeot 205 Turbo 16 (Barn Find)
Unlocked via the "Discover Japan" campaign track (specifically at the Pathfinder level in the Shimanoyama region), this rally legend is the premier alternative to the Subaru.

• The Scaling Advantage: While the Subaru is incredibly stable, community testing has shown that the Peugeot 205 T16 scales its multiplier significantly faster within short windows.
• The Math: In a 26-second custom sprint map, the Subaru often crosses the finish line having only displayed a 6x or 7x multiplier on screen before completing the calculation. The Peugeot hits its 9x ceiling seconds faster due to its aggressive base skill scaling.

If you are running hyper-short, repeatable 30-second community farm blueprints to grind out mastery points, switching to the Peugeot can mean the difference between earning 7 and 10 skill points per single event run.
3. Other Notable 9x Multiplier Options
If you prefer a different driving style, the Classic Rally and Retro Rally classifications are where you want to look. Non-common cars in these categories share the exact same overpowered mastery trees.

• 2021 Toyota GR Yaris / 2022 Subaru WRX: Excellent choices for tarmac-based drifting or urban farming in the alleys of Tokyo. They hold angle well and handle street curbs much better than low-slung supercars.
• 1983 Audi Sport Quattro: Ideal for high-speed cross-country farming across farmland and open fields where side-swiping fences ("Wreckage" skills) provides a continuous score stream.

Maximizing the Economy: The Wheelspin Loop
Farming these points is only the first step. The true meta-game in FH6 is converting your hard-earned Skill Points into raw progression. Players use these vehicles to quickly stack hundreds of mastery points, then buy cheap vehicles from the Autoshow (often under 200,000 credits) that offer guaranteed Super Wheelspins or cash payouts directly in their individual Car Mastery trees.
To expedite this process, many veterans choose to safely bypass the standard marketplace grind entirely. You can use verified third-party platforms like U4N to directly buy FH6 wheel spin packages, allowing you to instantly skip the repetitive blueprint grinding and pull the rare Forza Edition cars or high-value cosmetic rewards you actually want.

Pro Tip: Before you start burning through your Wheelspins—whether earned or purchased—make sure to buy up all the cheap player clothing items and car horns from the game's clothing menu first. This permanently removes them from the Wheelspin prize pool, ensuring your wheel lands strictly on high-value credits and legendary cars.

Final Verdict
If you want the most stable, un-flippable open-world companion for drifting through the Japanese countryside, stick to the Subaru 22B-STI. If you are looking to shave seconds off your custom EventLab grind tracks and want maximum multiplier acceleration, transition to the Peugeot 205 Turbo 16 the moment you pull it out of the Shimanoyama barn. Keep your chains under 500,000 points, bank them immediately, and enjoy building your ultimate garage.