TL;DR
- Use any electric vehicle – Rimac Concept Two or Extreme E vehicles work best
- Maintain exactly 100+ mph for 15 seconds on Guanajuato’s main straight
- Find treasure chest behind fruit carts in small alley near city center
- Complete challenge for 100 Forzathon points and 3 season points
- Avoid full throttle – use controlled acceleration for better speed maintenance
Games and Esports Articles
Forza Horizon 5’s Series 10 introduces an exciting electric vehicle-focused Treasure Hunt that challenges players to master speed control in urban environments. This Sustainable Energy challenge offers substantial rewards for those who understand the specific requirements and execution strategy.
Success in this event begins with proper vehicle selection – you must use an electric-powered car to qualify. The 2019 Rimac Concept Two stands out as an excellent choice, particularly since many players earned it during the previous week’s rewards. Alternatively, Extreme E vehicles provide reliable performance, while the Ford Mustang Mach-E 1400 offers accessible power for this specific speed maintenance challenge.
The core objective requires maintaining a precise 100 mph (161 km/h) speed for exactly 15 continuous seconds within Guanajuato’s city limits. This demands careful throttle control rather than maximum acceleration, as consistency proves more valuable than raw speed in this scenario.
Selecting the right electric vehicle significantly impacts your success rate in this Treasure Hunt. The Rimac Concept Two’s exceptional acceleration and stability make it ideal, but several alternatives perform admirably. Extreme E vehicles provide balanced handling, while the Mustang Mach-E delivers consistent power delivery perfect for speed maintenance challenges.
For optimal performance, focus on Guanajuato’s primary east-west thoroughfare running through the city center. This straight section provides the ideal terrain for maintaining consistent speed without obstacles or sharp turns disrupting your momentum. The key technique involves using approximately 70-80% throttle rather than full power, allowing finer control over your velocity.

Advanced players should consider slight performance tuning adjustments – increasing downforce can improve stability at the target speed, while transmission gearing optimization helps maintain the precise 100 mph requirement more comfortably. Avoid excessive power upgrades that might make speed control more challenging.
Once you’ve completed the speed challenge, locating the treasure chest becomes your next objective. The chest sits concealed behind colorful fruit vendor carts in a narrow side street adjacent to the main thoroughfare. Its prominent placement ensures visibility once you approach the correct location.

Navigation to the treasure site proves straightforward – from your speed challenge completion point, head toward the city’s central market district and watch for the distinctive fruit cart arrangement. The chest’s glowing aura becomes visible as you draw nearer, providing clear visual confirmation.
Collection requires a simple impact – any contact with your vehicle will smash the chest open and immediately credit your account with the 100 Forzathon points and 3 season points. No special maneuvers or precise alignment necessary.
Seasoned players can optimize their approach through several advanced techniques. Begin your speed run from the western city entrance, allowing maximum straightaway distance for acceleration and stabilization. Monitor your speedometer carefully rather than relying on feel – the 15-second timer begins counting only once you reach exactly 100 mph.
Avoid the common mistake of excessive speed – going significantly above 100 mph wastes effort and reduces control. Instead, focus on maintaining the minimum required velocity with smooth, consistent throttle inputs. Traffic patterns typically remain light on this route, but remain alert for occasional pedestrian vehicles.
Time management proves crucial – most players complete both the speed challenge and treasure collection within 3-5 minutes using optimal routes. For repeated attempts, consider creating a custom route marker to streamline navigation between challenge completion and treasure location.
Understanding these game mechanics helps not only with this specific challenge but improves your overall racing technique for future competitive events and specialized challenges throughout Forza Horizon 5’s evolving landscape.
Action Checklist
- Select electric vehicle – Rimac Concept Two or Extreme E recommended
- Navigate to Guanajuato’s main east-west straight road
- Maintain exactly 100+ mph for 15 seconds using controlled throttle
- Locate treasure chest behind fruit carts in nearby alley
- Smash chest with vehicle to claim 100 Forzathon points + 3 season points
No reproduction without permission:SeeYouSoon Game Club » How to solve “Sustainable Energy” Treasure Hunt in Forza Horizon 5. Where to find the Treasure Chest and hints Complete guide to completing the Sustainable Energy Treasure Hunt in Forza Horizon 5 with optimal strategies and vehicle recommendations
