Check Missouri gas prices today for regular, mid-grade, premium, and diesel fuel. The price tool below shows AAA-sourced daily averages, recent price movement, and a fill-up cost estimate for drivers across the Show-Me State.
What Affects Missouri Gas Prices?
- Heavy cross-country commercial trucking and freight demand along the I-70 and I-44 corridors
- Proximity to Mid-Continent refineries and regional pipeline supply networks
- Mississippi and Missouri River barge transport logistics impacting regional fuel distribution
- High availability and blending of ethanol due to strong local agricultural production
- Delivery distances to remote, rural communities in the Ozarks and northern plains
- Missouri’s state motor fuel tax and local market conditions
Missouri Gas Prices by Fuel Type
- Regular: The standard baseline fuel (often blended with 10% ethanol) for most daily commuters and passenger vehicles.
- Mid-grade: Recommended for older high-compression engines or vehicles towing campers through the Ozarks.
- Premium: Necessary for luxury, turbocharged, or high-performance vehicles to prevent engine knocking.
- Diesel: Tracks closely with commercial freight, agricultural transport, and heavy-duty trucking across the state’s highway network.
Missouri Gas Prices vs Nearby States
Regional borders in the Midwest and Plains create noticeable price shifts. When planning cross-state trips, keep these comparisons in mind:
- Kansas gas prices and Iowa gas prices often differ due to varying state taxes and local ethanol blending incentives.
- Illinois gas prices fluctuate based on Chicago metro market dynamics, stricter environmental mandates, and differing state fuel tax structures.
- Arkansas gas prices and Oklahoma gas prices may be lower or higher depending on regional pipeline access and daily supply routes.
Tips for Getting Better Gas Prices in Missouri
- Compare station prices in St. Louis or Kansas City before heading onto rural stretches of I-70 or US-60.
- Look for stations offering E15 (Unleaded 88), which is widely available in Missouri and often costs less than standard E10.
- Fill up your tank before driving through remote, mountainous areas in the Ozarks or the sparsely populated northern plains.
- Check your tire pressure regularly, especially during extreme Midwest winter cold and summer heat.
- Plan your diesel and fuel stops along major freight corridors before long commercial hauls.
- Avoid unnecessary idling in heavy metro traffic around the I-435 or I-270 beltways.
Missouri Gas Price FAQs
What is the average gas price in Missouri today?
The current daily averages for regular, mid-grade, premium, and diesel are displayed in the dynamic tool at the top of this page.
Why do St. Louis and Kansas City gas prices differ?
St. Louis relies heavily on Mississippi River barge logistics and specific metro air quality mandates, while Kansas City is influenced by Mid-Continent pipeline supply and different regional distribution networks.
Why can rural areas in the Ozarks cost more at the pump?
Stations in remote mountain towns face less local competition and higher overhead costs for fuel delivery over long, hilly routes from major interstate distribution hubs.
Is diesel included in Missouri gas price data?
Yes, the tool tracks Missouri diesel prices alongside unleaded options, which is essential for commercial truckers, agricultural transport, and RV travelers navigating the state’s major freight corridors.
Does Missouri use special gasoline blends?
Missouri generally uses standard federal EPA fuel blends, though specific summer reformulated gasoline may be required in the St. Louis and Kansas City metro areas to meet local air quality standards. Ethanol blends like E15 and E85 are also widely available.