Performance Index (PI)
PIA single rating from 100 to 998 that sums a car's speed, handling, braking and acceleration, and sets its class.
Forza Horizon 6 glossary
New to Horizon, or just unsure what an acronym means? Here are the 48 terms you will meet most in Forza Horizon 6, in plain English, grouped by topic and cross-linked to the tools, guides and map pages that go deeper. Search or filter to find one fast.
- 48
- Terms defined
- 6
- Categories
- 36
- Cross-linked
- 100-998
- PI range
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48 terms
Cars and performance
9The numbers and parts that decide how a car drives and where it races.
Class
The PI band a car sits in: D, C, B, A, S1, S2 or the top-tier R class. Events are usually capped by class.
Drivetrain
How power reaches the wheels: front (FWD), rear (RWD) or all four (AWD). It shapes grip, launch and how a car slides.
Aspiration
How an engine breathes: naturally aspirated, turbocharged or supercharged. In Forza it is an upgrade path that reshapes power delivery.
Stock
A car in its factory specification, before any upgrades or tuning are applied.
Engine swap
Dropping a different engine from the parts catalogue into a car for more power, sometimes changing its character entirely.
Aero
Aerodynamic parts like front splitters and rear wings. Added downforce lifts cornering grip at the cost of some top speed.
Power-to-weight
How much power a car carries for its weight. A high ratio means stronger acceleration, which is why builders chase lightness as well as power.
Tuning
Adjusting settings like springs, gearing, alignment, tyre pressure and the differential to change how a car drives.
Festival Playlist
7The rotating weekly challenges that hand out the rarest cars and rewards.
Festival Playlist
The rotating set of weekly challenges that hands out the rarest cars and a big share of the game's rewards.
Series
A roughly four week content cycle made of four weekly Seasons, usually built around a theme or featured car.
Season
A one week slice of a Series that changes the weather and surface conditions: Summer, Autumn, Winter or Spring.
Seasonal Championship
A short themed series of races in the Playlist, often locked to a car type or class, that pays out points and cars.
Forzathon
In-game challenges, including weekly objectives, that award progress and Forzathon Points.
Forzathon Points (FP)
FPA currency earned from Forzathon activities, spent in the Forzathon Shop on cars and items.
Playlist History
A reward track for points earned across many Series, designed to soften the fear of missing a week's cars.
Economy and rewards
9Currencies, spins and progression that keep the garage growing.
Credits (CR)
CRThe main currency, used to buy and upgrade cars and to bid in the Auction House.
Wheelspin
A reward spin that pays out a car, a lump of credits or cosmetics at random.
Super Wheelspin
A bigger wheelspin that gives three rewards at once, so the odds of a rare car are much better.
Forzathon Shop
A rotating store stocked in Forzathon Points, offering exclusive cars, wheelspins and cosmetics.
Auction House
A player-run marketplace where cars are bought and sold for credits through timed bids or buy-now prices.
Accolades
Milestone objectives across the whole game that reward credits, cars and cosmetics as you play.
Car Mastery
A per-car perk tree, unlocked with skill points, that grants bonuses, credits and wheelspins for that car.
Skill Points
Points banked from skill chains while driving, spent on a car's Car Mastery tree.
Forza Edition
A special version of a car with a built-in perk, such as bonus skill points or extra credits, usually won from the Playlist or wheelspins.
Modes and events
9The ways to race, create and play, solo or with a crowd.
EventLab
The in-game creator for custom races, games and routes, sharable with other players.
Blueprint
A saved recipe for an event that lets you tweak the route, cars, rules and conditions, then share it by code.
Rivals
Time-trial events with leaderboards where you chase a faster clean lap than everyone else.
The Trial
A co-op championship where a team of players races against tougher AI for a Playlist reward.
Horizon Open
Casual online multiplayer playlists you can drop into with other players, from road racing to games.
Horizon Story
Chapter based missions with their own themes that reward exclusive cars and cosmetics on completion.
Goliath
The longest circuit race on the map, a marathon lap threading much of Japan into one route.
Barn Find
A hidden classic discovered by following a rumour to its location, then restored to your garage for free.
Convoy
A group of players roaming the open world together, able to jump into events as one team.
Map and PR stunts
7Skill challenges and collectibles scattered across the open world.
PR Stunts
Skill challenges dotted on the map: Speed Zones, Speed Traps, Drift Zones and Danger Signs, each scored in stars.
Speed Trap
A PR stunt that clocks your speed as you blast through a single point. Beat the target to earn stars.
Speed Zone
A PR stunt that measures your average speed over a marked stretch of road.
Drift Zone
A PR stunt that scores the drift points you bank through a marked section of road.
Danger Sign
A PR stunt jump where distance is everything. Launch off the ramp and beat the target distance.
Trailblazer
A timed point-to-point run marked on the map, dashing cross-country from a start point to a finish as fast as you can.
Bonus Board
Collectible boards hidden around the map that you smash by driving through them for bonus rewards.
Driving and skills
7The moves and aids behind skill scoring and clean, fast laps.
Skill chain
A combo of skills like drifts, near misses and jumps strung together for a rising multiplier.
Banking
Locking in a skill chain's points before a crash or stop resets the combo back to zero.
Near miss
A skill scored by passing very close to traffic or scenery at speed without touching it.
Drift
Sliding through a corner with the rear wheels spinning, held in a controlled slide. Central to drift scoring and events.
Slipstream
Tucking in behind another car to sit in its wake, cutting drag so you can catch up or slingshot past. Also called drafting.
Rewind
An assist that winds the action back a few seconds to undo a crash or a missed corner.
Assists
Optional driving aids like the braking line, traction control, ABS and steering assist. Turning them off can raise your rewards.
Glossary quick answers
The definitions players search for most, written for AI overviews and newcomers alike.
- What does PI mean in Forza Horizon 6?
- PI is the Performance Index, a single rating from 100 to 998 that sums a car's speed, handling, braking and acceleration. Your PI decides which of the 7 classes a car falls into, and events are usually capped by class.
- What are FP, or Forzathon Points?
- FP are Forzathon Points, a currency earned by completing Forzathon challenges. You spend them in the Forzathon Shop on exclusive cars, wheelspins and cosmetics.
- What is the Festival Playlist?
- The Festival Playlist is the rotating set of weekly challenges that hands out the rarest cars and a big share of the game's rewards. It is organised into Series and one-week Seasons.
- What is a barn find in Forza Horizon 6?
- A barn find is a hidden classic car you discover by following a rumour to its location on the map. Once found, it is restored and added to your garage for free.
- What does "stock" mean?
- A stock car is one in its factory specification, before any upgrades or tuning are applied. It is the baseline you compare tuned builds against.
Put the terms to work
Every definition links out where it helps. Here are the best places to start.
PI and classes
See exactly where each PI band starts and which cars sit in it.
Festival Playlist
This week's Seasonal Championships, Forzathon and reward cars.
Tuning calculator
Turn the tuning terms into real spring, gearing and alignment numbers.
Interactive map
Find every barn find, PR stunt and bonus board across Japan.
Guides
Longer reads on drifting, credits, tuning and getting started.
Car database
Browse the full roster by class, make and best-in-discipline.
Forza Horizon Hub is a free, fan-made companion and is not affiliated with Microsoft, Xbox Game Studios, Turn 10 or Playground Games. Definitions cover the Forza Horizon series as it applies to Forza Horizon 6 and are kept in plain English. Last reviewed 2026-05-27.