Wondering what is good gas mileage for your car in 2026? Whether you’re buying a new vehicle or checking how efficiently your current car performs, this complete MPG guide covers everything — plus a free gas mileage calculator to check your exact fuel efficiency instantly.
- Cars: 30+ MPG = Good | 40+ MPG = Excellent
- SUVs/Trucks: 25+ MPG = Good | 35+ MPG = Excellent
- US Average: 28.2 MPG combined (2026)
What Is Good Gas Mileage? (MPG by Vehicle Type)
How to Calculate Gas Mileage (MPG)
Use our free gas mileage calculator — or calculate manually with this simple formula:
MPG Formula:
MPG = Miles Driven ÷ Gallons Used
Example: 350 miles on 12 gallons:
350 ÷ 12 = 29.2 MPG
Step-by-Step: How to Calculate Your Car’s MPG
- Fill your tank completely and reset your trip odometer to zero
- Drive normally until the tank is about half empty (or use a full tank for accuracy)
- Fill up again — note the gallons used to refill
- Note the miles driven from your trip odometer
- Divide miles by gallons — that’s your real-world MPG
Best Gas Mileage Cars in 2026
How Much Does Bad Gas Mileage Cost You?
Here’s the annual fuel cost difference between good and poor gas mileage (15,000 miles/year at $3.50/gallon):
10 Tips to Improve Your Gas Mileage in 2026
- Maintain proper tire pressure — Under-inflated tires reduce MPG by 0.5% per PSI below recommended
- Drive at steady speeds — Use cruise control on highways; avoid rapid acceleration
- Reduce idling — Modern engines use more fuel idling than restarting
- Remove excess weight — Every 100 lbs reduces MPG by ~1-2%
- Use the right motor oil — Using 5W-30 instead of 5W-20 can reduce MPG by 1-2%
- Keep up with maintenance — Clean air filters and spark plugs improve efficiency
- Avoid roof racks when not in use — They increase drag and reduce highway MPG by 5-25%
- Park in shade — Cooler temperatures reduce fuel evaporation and AC use
- Accelerate gently — Aggressive driving reduces MPG by 15-30% on highways
- Plan efficient routes — Combine errands, avoid rush hour traffic
Frequently Asked Questions
Is 30 MPG good for a car?
Yes, 30 MPG combined is considered good gas mileage for most passenger cars in 2026. The US fleet average is around 28 MPG, so 30 MPG puts you above average. For compact cars and sedans, 35+ MPG is excellent.
What is good gas mileage for an SUV?
Good gas mileage for an SUV is 25-30 MPG combined in 2026. Hybrid SUVs like the Toyota RAV4 Hybrid (40 MPG) and Honda CR-V Hybrid (40 MPG) offer excellent fuel economy. Conventional SUVs averaging 22-27 MPG are considered average.
How do I calculate my gas mileage?
Fill your tank, reset trip odometer, drive until you need to refuel, fill up again, then divide miles driven by gallons used. Use our free gas mileage calculator for instant results.
What is considered poor gas mileage?
For sedans, under 25 MPG is poor. For SUVs, under 20 MPG is poor. For trucks, under 15 MPG is considered poor gas mileage. Poor fuel economy costs significantly more at the pump over a year.
Related Calculators
- Gas Mileage Calculator — Calculate your exact MPG and fuel costs
- Mileage Reimbursement Calculator — Calculate IRS mileage reimbursement 2026
- Percentage Calculator — Calculate fuel cost percentage changes
- Reverse Sales Tax Calculator — Find pre-tax fuel prices