Diesel Fuel Prices in Knoxville, TN

Updated April 5, 2026 — Prices updated regularly from EIA data

$3.82

Diesel Fuel (N/A octane) per gallon

About Diesel Fuel in Knoxville

The going diesel rate in Knoxville is $$3.82 per gallon today. Diesel prices vary meaningfully by station — check price apps before large fill-ups to avoid overpaying.

When to Use Diesel Fuel

Best for: commercial and towing

Vehicle types: diesel trucks and commercial vehicles

Fuel Price Comparison in Knoxville

Fuel TypePricevs. Diesel FuelOctane
Regular Unleaded$2.82$-1.0087
Premium Gasoline$3.52$-0.3091-93
Diesel Fuel THIS PAGE$3.82—N/A

Diesel Fuel in Nearby Cities

Asheville$3.79Johnson City$3.61
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Frequently Asked Questions

{octaneInfo} Octane rating measures a fuel's resistance to premature ignition (knock). Standard regular is 87, mid-grade is 89-90, and premium is 91-93 in the United States.
Use GasBuddy and filter by fuel type to see current Diesel Fuel prices at stations near your location in Knoxville. Warehouse clubs and high-volume discount stations typically offer the best Diesel Fuel prices.
All Diesel Fuel sold in Knoxville must meet minimum federal standards. TOP TIER certified stations add extra detergency additives. Most major brands (Shell, Chevron, Costco, Wawa) are TOP TIER certified. Non-certified independents meet legal minimums only.
In Knoxville, Diesel Fuel is priced at $$3.82 per gallon versus ${regularPrice} for regular — a ${diff} per gallon premium. On a 15-gallon fill-up, that's ${fillDiff} extra. Over 50 annual fill-ups, the premium adds ${annualDiff} to your fuel costs.

Related Gas Price Pages

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