Never be short at the pump again. Enter your tank size, current fuel level, and today's gas price — get the exact dollar amount to put on the pump before you walk inside.
Open Full Fill-Up CalculatorHow much does a full tank cost? Here's a quick reference at $3.50/gallon:
| Vehicle | Tank Size | Full Tank Cost | Half Tank Cost |
|---|---|---|---|
| Honda Civic | 12.4 gal | $43.40 | $21.70 |
| Toyota Corolla | 13.2 gal | $46.20 | $23.10 |
| Toyota Camry | 15.9 gal | $55.65 | $27.83 |
| Honda CR-V | 14.0 gal | $49.00 | $24.50 |
| Ford F-150 | 23.0 gal | $80.50 | $40.25 |
| Chevy Silverado | 24.0 gal | $84.00 | $42.00 |
| Toyota RAV4 | 14.5 gal | $50.75 | $25.38 |
| Ford Explorer | 18.6 gal | $65.10 | $32.55 |
Based on $3.50/gallon. Prices vary by location and grade of fuel.
Most people say "$30 on pump 4" and end up with a random, non-full tank. Use Gaslo first to get the exact amount for a full tank, then put that specific number on the pump. You'll always leave with a full tank and never overpay.
Most cars run fine on regular (87 octane) even if the manufacturer recommends premium. Only cars that require premium (turbocharged engines, many BMWs, some Audis) actually need it. "Recommended" is not the same as "required." Check your owner's manual — if it says "required," use premium. If it says "recommended," regular is usually fine and saves $0.30–$0.60 per gallon.
When the pump clicks off automatically, your tank is full. Adding more can actually damage your car's evaporative emissions system (the charcoal canister) and force liquid gas where only vapors should go. It can also cause your check engine light to come on. Stop when the pump clicks.
Gas prices tend to rise Thursday through Saturday as weekend travel increases demand. Monday and Tuesday are statistically the cheapest days to fill up at many stations. The difference is typically $0.03–$0.08 per gallon — not huge, but free savings over time.