Cheapest Gas in Naperville, IL
Updated April 5, 2026 — Prices updated regularly from EIA data
$3.28
Lowest price at Costco in Naperville
Finding Cheap Gas in Naperville
To find the cheapest Naperville gas, look for warehouse clubs, high-volume discount chains, and stations in competitive commercial corridors. Today's best Naperville price is $$3.28 per gallon for regular unleaded.
Maximum Savings in Naperville
Choose Costco over Chevron
$0.25 per gallon
$3.75 per 15-gallon fill • $12.00 per year (est.)
Cheapest Brands in Naperville
| Rank | Brand | Est. Price | Savings vs. Most Expensive |
|---|---|---|---|
| #1 | Costco | $3.28 | $0.25 |
| #2 | Speedway | $3.40 | $0.13 |
| #3 | Circle K | $3.41 | $0.12 |
| #4 | Sunoco | $3.44 | $0.09 |
| #5 | Marathon | $3.45 | $0.08 |
| #6 | BP | $3.47 | $0.06 |
| #7 | Mobil | $3.48 | $0.05 |
| #8 | Exxon | $3.49 | $0.04 |
| #9 | Shell | $3.51 | $0.02 |
| #10 | Chevron | $3.53 | $0.00 |
Gas Saving Tips for Naperville Drivers
- Use cruise control on highways to maintain steady speed. Speed variability increases fuel consumption; steady-state driving at 65 MPH uses significantly less fuel than oscillating between 55 and 75.
- Avoid idling for more than 60 seconds. Modern engines warm up faster while driving than idling, and idling gets literally zero miles per gallon.
- Park in shaded areas when possible — parking in the sun increases evaporative fuel loss from your tank and makes the engine work harder to cool the cabin when you start driving.
- Combine errands into single efficient trips rather than making multiple short trips. Cold engines use significantly more fuel — letting the engine warm up across one longer trip is far more efficient.
- Check tire pressure monthly, especially as seasons change — tire pressure drops about 1 PSI for every 10-degree Fahrenheit temperature decrease.
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