Sim Racing Fuel Calculator
Calculate exactly how much fuel you need for any race. Supports sprint races, endurance events, and multi-stint strategy planning for iRacing, ACC, F1, and all major simulators.
Standard Fuel Calculator
Results
Advanced Multi-Stint Calculator
Stints
Results
How to Find Your Fuel Consumption Data
Accurate fuel calculations start with accurate data. Here's how to gather the information you need for each sim:
iRacing
Check the fuel usage in the F4 black box during practice. Run at least 5 laps at race pace to get an accurate average.
Assetto Corsa Competizione
Use the MFD (Multi-Function Display) to view fuel consumption. The "Fuel to End" calculation updates in real-time.
Gran Turismo 7
Check the post-race summary or use the HUD fuel gauge. Note that fuel consumption varies significantly with driving style.
F1 24/25
The MFD shows fuel usage per lap. Remember that fuel saving modes can reduce consumption by up to 30%.
rFactor 2
Enable the fuel display in the HUD settings. Most telemetry apps also track fuel consumption automatically.
Automobilista 2
Check the in-car display or use the pause menu telemetry. Fuel usage is shown per lap after completing a lap.
Tips for Accurate Data
- Use race pace, not qualifying pace: You'll use more fuel when pushing for a fast lap. Gather data at a sustainable race pace.
- Account for traffic: Racing in a pack with dirty air and overtaking uses more fuel than running alone.
- Consider track conditions: Wet tracks, temperature changes, and track evolution can all affect fuel consumption.
- Run multiple laps: A single lap isn't reliable. Average your consumption over at least 5-10 laps.
Typical Fuel Consumption by Car Class
Use these benchmarks as a starting point, but always verify with your own testing:
| Car Class | Typical Consumption | Notes |
|---|---|---|
| GT3 | 2.5 - 4.0 L/lap | Varies by track length and car model |
| GT4 | 2.0 - 3.0 L/lap | Generally more fuel efficient than GT3 |
| LMP2 / Hypercar | 3.5 - 5.5 L/lap | High consumption but large tanks |
| Formula Cars | 1.5 - 2.5 L/lap | Depends heavily on engine mode |
| Touring Cars | 2.0 - 3.5 L/lap | TCR and BTCC style vehicles |
| Road Cars / Street | 1.5 - 3.0 L/lap | Wide range depending on vehicle |
Fuel Strategy Tips
Why Add Extra Fuel?
Our calculator adds a 2-lap buffer to your fuel load. Here's why this matters:
- Formation laps: Many races include formation or pace laps that consume fuel but aren't counted in the race distance.
- Safety car periods: Extended safety cars mean extra laps at reduced pace but still burning fuel.
- Calculation margin: Small errors in lap time or consumption estimates can add up over a long race.
- Pushing on final laps: If you're battling for position, you might use more fuel than your conservative estimate.
Multi-Stint Strategy
For endurance races, consider these factors when planning your stints:
- Tire degradation: Tires typically last 45-90 minutes depending on the car and track. Plan fuel stops around tire changes.
- Undercut vs overcut: Pitting early (undercut) or late (overcut) relative to competitors can gain track position.
- Fuel weight: A full tank is heavy and slows you down. Some strategies use short-fueling to gain pace early in a stint.
- Pit window: In endurance races, there's often an optimal pit window. Use this calculator to plan your stops.
Common Mistakes to Avoid
- Using qualifying pace: Qualifying laps use significantly more fuel than race pace. Always use race data.
- Ignoring traffic: Solo practice doesn't account for the extra fuel used when racing in a pack.
- Forgetting the out lap: Your out lap after a pit stop uses fuel but might not be at full race pace.
- Not accounting for conditions: Night sessions, rain, and temperature changes all affect consumption.
Calculator inspired by SimRacingCockpit.gg