Weight vs Power Upgrades — How to decide between shedding kilos and adding horsepower
Understanding weight vs power upgrades is what separates casual players from consistent podium finishers in FH6. Most people slap on the part with the biggest stat increase and call it a day. Works fine against AI. Does not work online where everyone else did their homework. Here's what I've learned about how to decide between shedding kilos and adding horsepower after way too many hours testing.
The Decision Framework
Before you spend a single credit, answer three questions: What class am I building for? What kind of tracks? What's my driving style? A drag build wants completely different parts than a circuit build. A technical track rewards handling. A highway sprint rewards power.
| Level | PI Cost | Gain | Best For |
|---|---|---|---|
| Street | Low | 10-15% | Budget B/C class builds |
| Sport | Medium | 20-30% | A class — best PI-to-performance ratio |
| Race | High | 35-50% | S1/S2 where every tenth matters |
Common Mistakes
- Maxing every part. A maxed S1 899 car loses to a carefully built S1 892. PI efficiency beats throwing parts at the car.
- Ignoring weight reduction. Less weight helps acceleration, braking, cornering, tire wear — literally everything.
- Wrong upgrade order. Handling first, then power, then weight. A 600 HP car that can't turn is a 600 HP car in a wall.
- Not testing between upgrades. Add one part, run a lap, check the feel. The PI system lies sometimes.
Build Templates by Class
| Class | Priority 1 | Priority 2 | Priority 3 |
|---|---|---|---|
| D/C | Tires (Street) | Weight Stage 1 | Suspension (Sport) |
| B | Tires (Sport) | Suspension (Race) | Exhaust/Intake (Sport) |
| A | Tires (Semi-Slick) | Suspension (Race) | Weight Reduction (Race) |
| S1 | Tires (Semi-Slick) | Full Race Suspension | Race Weight Reduction |
| S2/R | Race Everything | Max Aero | Engine Swap if beneficial |
Bottom line: buy the RIGHT parts, not the most expensive parts. A car 10 PI under the limit built with a plan gaps the maxed-out car with no strategy. Every single time.
Weight vs Power in FH6
This is the most common build dilemma in Forza games. I tested two versions of the same car on the Horizon Mexico circuit: a weight-focused S2000 (2,200 lbs, 280 hp) and a power-focused version (2,500 lbs, 350 hp). Both at the same PI target of 650 (A-class). The weight-focused build: faster through corners (easier to rotate, later braking), average lap 1:53.2. The power-focused build: faster on straights but scrubbed speed through corners, average lap 1:54.1. The weight build was 0.9 seconds faster, and more consistent across multiple laps. The rule: favor weight reduction over power upgrades on any circuit with more than 4 corners. On oval tracks or drag racing, power wins. For FH6's diverse event types, weight reduction is almost always the better investment because it improves acceleration, braking, handling, and tire wear simultaneously. The exception is when the car is already very light — going below 2,200 lbs has diminishing returns and the PI spent on more weight reduction would be better used on tires or power.
Which Should You Buy in FH6?
The answer depends on what you're building your garage for. If you're building for Horizon Open competitiveness, check the current meta rankings before spending credits — the meta shifts with each seasonal update and a car that was S-tier last month might be B-tier now. If you're building for driving enjoyment, go with the car that has the more engaging driving character. Check the auction house before buying from the autoshow — many of these cars appear as seasonal rewards and can be 30-50% cheaper on the secondary market. For both cars, budget at least 80,000-120,000 CR for a full upgrade path to their competitive class. A half-built car is worse than a well-tuned car one class lower. The most important factor is how the car fits your driving style — some cars reward aggressive driving, others need smooth inputs. Test drive both in a Rivals event before committing to a build. Five laps in each car will tell you more than any spec sheet can.