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This 2005 Subaru Legacy B4 2.0 GT Can Beat Supercars in Forza Horizon 6 Speed Test

2005 Subaru Legacy B4 2.0 GT is the cheapest FH6 200 MPH solution. Costing about 9,500 credits, it can exceed 200 MPH with only 5,000 credits in upgrades. Its AWD, turbo potential, and low tuning cost make it the best budget pick.

Jul 23, 2026 Author: EZG

In Forza Horizon 6, 200 MPH is a watershed moment in vehicle performance. Most participants, when thinking of this speed, immediately think of hypercars like McLaren F1, Lamborghini, and Ferrari. These cars can easily achieve the goal, but their exorbitant prices defeat the purpose of a low-budget challenge.

The goal of this challenge was clear: to find a vehicle with the lowest possible cost to achieve a Break 200 MPH in an open-world highway environment. Vehicle price, modification costs, and final top speed all needed to be taken into account.

After multiple rounds of testing, the winning vehicle was 2005 Subaru Legacy B4 2.0 GT. A regular sedan costing less than 10,000 credits, through targeted upgrades, achieved a top speed that many supercars could only reach.

This 2005 Subaru Legacy B4 2.0 GT Can Beat Supercars in Forza Horizon 6 Speed Test

Challenge: Finding the Lowest-Cost 200 MPH Solution

FH6 200 MPH challenge actually tests a vehicle's overall performance.

The most crucial aspect during the high-speed phase is Sustained Power Delivery. Because aerodynamic drag increases significantly once a vehicle reaches 180 MPH, models with insufficient horsepower will quickly lose acceleration.

Simultaneously, gear ratio directly affects top speed performance. Many vehicles have ample power at mid-to-high speeds, but because of the limitations of the highest gear, their speed cannot be further increased.

At the start of this FH6 challenge, the test vehicles primarily focused on high-performance sports cars.

McLaren F1 could easily reach the target, but its high price makes it only suitable as a performance reference. Models like Lamborghini Countach could also complete the challenge, but the budget was still too high.

With a reduced budget, the focus shifted to lower-priced models with higher modification potential. While models like Lexus LFA and Noble M600 performed well, they still fell short of truly low-budget options.

Entering 10,000 credits range, vehicle selection became even more difficult.

Some compact cars have extremely low prices, but require engine swaps and extensive upgrades to achieve 200 MPH, ultimately making the investment unprofitable.

Low-priced vehicles need to have sufficient power; otherwise, modification costs will quickly spiral out of control. 

Commonly Used Vehicles for Completing the Challenge

Normally, the easiest way to complete 200MPH challenge is still by choosing a FH6 supercar.

McLaren F1s, Lamborghini Aventadors, and various high-performance race cars offer excellent stock top speeds, requiring minimal modifications after acquire to achieve the goal.

These vehicles are suitable for efficiency-oriented enthusiasts, but their price limits their competitiveness in budget challenges.

Another common option is Japanese performance cars. Toyota Supras, Nissan GT-Rs, and Subaru models all have good modification potential.

While their stock performance may be average, significant performance improvements can be achieved through engine enhancements, turbo upgrades, and transmission tuning.

Modification options for lower-priced models are also worth exploring.

For example, Honda Beat is inexpensive and offers ample modification potential, but requires an engine replacement to achieve sufficient power. Considering subsequent upgrade costs, the overall investment exceeds expectations.

In summary, considering both cost and performance, models with turbocharger capabilities and mature modification paths are more suitable for low-budget top speed challenges.

Best Budget Choice: 2005 Subaru Legacy B4 2.0 GT

Forza Horizon 6 2005 Subaru Legacy B4 2.0 GT is the best choice for this challenge.

The biggest advantage of this car is its low price, while offering ample power upgrade potential. Priced at approximately 9,500 credits, it's very competitive in the low-budget segment.

Compared to some small cars that require complete modifications, Subaru Legacy retains its stock engine, allowing for performance improvements through simple upgrades, saving a significant amount of budget.

Its all-wheel-drive system is also a major advantage. 200MPH test requires long-distance high-speed driving, making vehicle stability crucial. Subaru Legacy is easy to control at high speeds, exhibiting no noticeable loss of control during continuous acceleration.

Modification Plan

The modifications to Subaru Legacy in this FH6 challenge will focus on power enhancement and top speed optimization, with the core goal of breaking 200MPH barrier at the lowest possible cost.

First, upgrade Camshaft to improve the engine's high-revving output. In high-speed testing, the vehicle needs to continuously deliver power across a high RPM range, and Camshaft upgrade effectively improves acceleration at higher speeds.

A turbocharger upgrade was then added to increase engine power, giving the vehicle the power reserve to exceed 200 MPH.

A transmission upgrade was equally essential. The stock gear ratios limited Subaru Legacy's top speed; the sports transmission readjusts the gear range, allowing the vehicle to continue delivering power at higher speeds.

The final modification cost was controlled at approximately 5,000 FH6 credits, bringing the total investment, including the vehicle get cost, to approximately 15,000 credits.

Final Evaluation

The upgraded Subaru Legacy demonstrated very strong high-speed capabilities.

After gaining sufficient running start distance on the highway, the vehicle's speed steadily increased, moving from 180 MPH to 190 MPH range, and subsequently exceeding 200 MPH. The entire process demonstrated the car's power reserve and high-speed stability.

Achieving 200 MPH with 15,000 credits is a very cost-effective achievement for a Forza Horizon 6. Compared to directly gettiing a million-dollar Supercar, Subaru Legacy offers a more suitable route for budget-conscious buyers.

The value of this car lies in its simplicity and efficiency. Its low price, well-established modification options, and stable high-speed performance make it a top contender in the current low-budget 200MPH challenge.

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