If you’re driving a full-size pickup that averages about 15 mpg, you probably feel every price change at the pump. The question many truck owners are asking now is simple: how does that 15 mpg truck stack up against an electric truck on annual “fuel” cost? This guide walks through the real-world math so you can see what you’d likely spend in a year with each, and what switching might save you.
Quick answer
Why compare a 15 mpg truck vs an electric truck?
A lot of discussions about electric trucks stay vague, “EVs are cheaper to run” or “charging is complicated.” When you own a truck, you don’t live in vague. You live in miles, gallons, and dollars. Comparing a 15 mpg gas truck vs an electric truck on annual fuel cost gives you something solid: a cost-per-mile you can plan around.
- 15 mpg is a realistic average for many half-ton and three-quarter-ton gas pickups in mixed driving.
- Trucks usually rack up more miles than compact cars, commuting, towing, home projects, and weekend trips.
- Fuel is one of the few costs you feel every single week, so lowering it has an immediate impact on your budget.
Think in cost per mile
Key assumptions behind the fuel cost math
To keep this comparison fair and easy to adapt, we’ll lay out a simple set of baseline assumptions, then show you how to tweak them for your situation.
Baseline assumptions for our 15 mpg vs electric truck math
Use these as a starting point, then adjust for your driving and local prices.
Gas truck
- Fuel economy: 15 mpg
- Fuel: regular gasoline
- Average gas price: $3.75/gal
Electric truck
- Energy use: 2.1–2.4 mi/kWh (about 43–48 kWh/100 mi)
- Home electricity: $0.14/kWh
- Public fast charging: $0.35–$0.45/kWh
Driving pattern
- Annual miles: 15,000
- Mix of city/highway
- Typical 75–90% home charging for an EV
Your numbers will vary
Step-by-step: annual fuel cost for a 15 mpg gas truck
Let’s start with the familiar side of the equation: a 15 mpg gasoline pickup.
Annual fuel cost for a 15 mpg truck
Assuming 15,000 miles per year at different gas prices.
| Annual miles | MPG | Gallons used per year | Gas price | Annual fuel cost |
|---|---|---|---|---|
| 15,000 | 15 | 1,000 | $3.25 | $3,250 |
| 15,000 | 15 | 1,000 | $3.75 | $3,750 |
| 15,000 | 15 | 1,000 | $4.25 | $4,250 |
You can adapt this table using your actual annual miles and local fuel price.
The math is straightforward: gallons per year = miles per year ÷ mpg. At 15 mpg and 15,000 miles, that’s 1,000 gallons. Multiply gallons by your local price per gallon to get your annual fuel spend.
Gas truck cost-per-mile formula
Step-by-step: annual “fuel” cost for an electric truck
Electric trucks don’t sip gallons; they consume kilowatt-hours (kWh) of electricity. So instead of mpg, you’ll often see a figure like kWh per 100 miles or its inverse, miles per kWh. We’ll use a realistic mix for modern full-size electric pickups: about 2.1–2.4 miles per kWh in everyday driving.
Electric truck efficiency snapshot
To compare fairly, we’ll look at three scenarios: mostly home charging, a 50/50 home vs public mix, and heavy fast charging like you might see on frequent long road trips.
Scenario A: Mostly home charging
Assume 90% of your charging happens at home at $0.14/kWh, 10% on road trips at $0.40/kWh, and your truck averages 45 kWh/100 miles (2.22 mi/kWh).
- Energy per mile: 0.45 kWh
- Effective kWh price: (0.9 × $0.14) + (0.1 × $0.40) ≈ $0.17
- Cost per mile: 0.45 × $0.17 ≈ $0.077 (7.7 cents/mile)
- Annual cost (15,000 mi): ≈ $1,150
Scenario B: Mix of home and public charging
Now assume 60% home at $0.14/kWh and 40% public DC fast charging at $0.40/kWh, same efficiency.
- Energy per mile: 0.45 kWh
- Effective kWh price: (0.6 × $0.14) + (0.4 × $0.40) ≈ $0.24
- Cost per mile: 0.45 × $0.24 ≈ $0.108 (10.8 cents/mile)
- Annual cost (15,000 mi): ≈ $1,620
Electric truck cost-per-mile formula
15 mpg truck vs electric truck: annual cost comparison
Now let’s put the gas and electric trucks on the same playing field: 15,000 miles a year, with realistic fuel and electricity prices. We’ll show a few different scenarios so you can see how much charging habits matter.
15 mpg truck vs electric truck: annual “fuel” cost
15,000 miles per year, with different energy prices and charging mixes.
| Vehicle & scenario | Energy price | Cost per mile | Annual cost (15,000 mi) |
|---|---|---|---|
| 15 mpg gas truck, $3.25/gal | $3.25/gal | $0.22 | $3,250 |
| 15 mpg gas truck, $3.75/gal | $3.75/gal | $0.25 | $3,750 |
| 15 mpg gas truck, $4.25/gal | $4.25/gal | $0.28 | $4,250 |
| Electric truck, 90% home / 10% fast | Home $0.14, DC $0.40 | ≈$0.08 | ≈$1,150 |
| Electric truck, 60% home / 40% fast | Home $0.14, DC $0.40 | ≈$0.11 | ≈$1,620 |
| Electric truck, 100% home | $0.14/kWh | ≈$0.06 | ≈$950 |
The electric truck generally costs less per mile, especially if most charging happens at home.
Rule of thumb
Beyond averages: how your driving pattern changes the math
Averages are a good starting point, but your life probably doesn’t look like a perfect 15,000-mile pie chart. Maybe you tow a boat every weekend, or maybe your truck spends most of its time hauling kids and lumber, not trailers. Here’s how specific habits can nudge the numbers.
How real-world driving shifts gas vs electric truck costs
Same trucks, different lives, different fuel bills.
Heavy towing
Both gas and electric trucks get less efficient when towing.
- Gas: That 15 mpg can drop into the single digits.
- EV: Range can drop by 30–50% depending on trailer and speed.
- Impact: Extra cost on both sides, but you still usually pay less per mile on electricity than on $3.75–$4.25 gas.
Short city trips
Stop‑and‑go commuting is where EVs shine.
- Gas: Real‑world mpg can slide under 15.
- EV: Regenerative braking recovers energy, so efficiency often improves in the city.
- Impact: Electric truck’s advantage generally grows.
Long highway runs
Steady highway speeds narrow the gap.
- Gas: Some trucks do a bit better than 15 mpg on pure highway.
- EV: Higher speeds eat range faster, especially with big tires and racks.
- Impact: If you rely on fast chargers at highway prices, the EV’s cost advantage shrinks but often doesn’t vanish.
Cold weather surprise
Other ownership costs hiding behind the fuel pump
Fuel is only part of the story. When you compare a 15 mpg truck vs an electric truck, it’s smart to at least think about the rest of the ownership picture, especially if you’re planning to keep the vehicle for several years.
Costs to consider beyond fuel
1. Maintenance and service
Gas trucks need regular oil changes, spark plugs, exhaust work, and transmission service over time. Electric trucks eliminate oil changes and have fewer moving parts, though you still maintain brakes, tires, and suspension.
2. Brake wear
Regenerative braking in EVs means the electric motor does much of the slowing, which can significantly extend brake pad life compared with a heavy 15 mpg truck in city driving.
3. Tires
Electric trucks are heavy and often deliver instant torque. You’ll want to budget for quality tires either way. Rotations and alignments matter for efficiency on both gas and electric trucks.
4. Depreciation and resale
New electric trucks can depreciate quickly, just like new gas trucks. Shopping used, and understanding battery health, can help you avoid the steepest part of the curve.
5. Time and convenience
Ask yourself what’s worth more to you: stopping at gas stations weekly, or plugging in at home most nights and waking up to a “full tank” every morning? The answer is different for everyone, but it belongs in your calculation.
Where battery health fits in
How a used electric truck can tilt the equation further
Everything we’ve talked about so far focuses on running costs, but the price you pay to get into the truck matters just as much. This is where a well‑chosen used electric truck can swing total ownership cost decisively in your favor.
Buying a used gas truck
Used gas pickups are a known quantity. You can shop by mileage, model year, and maintenance records. But you’re locked into that 15 mpg reality if you choose an older V8 or heavy-duty model, and you’re exposed to every spike in gas prices for as long as you own it.
Buying a used electric truck
With a used EV truck, the big question is battery health, how much usable capacity you still have and how the truck was driven and charged. That’s exactly the gap Recharged was built to fill. Every vehicle on the platform comes with a Recharged Score Report that measures battery health, estimates remaining useful life, and checks fair market pricing, so you can see whether the lower “fuel” cost truly offsets the purchase price in your case.
How Recharged can help
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Browse VehiclesFAQ: 15 mpg truck vs electric truck annual fuel cost
Frequently asked questions
Bottom line: is it worth swapping your 15 mpg truck for electric?
When you strip away the hype and look at plain numbers, a 15 mpg gas truck is expensive to feed, often $3,000–$4,000 per year in fuel at typical U.S. prices. An electric truck, especially one you can charge mostly at home, usually cuts that annual “fuel” bill roughly in half, sometimes more. That savings doesn’t automatically make every electric truck the right buy for you, but it’s a powerful lever in the total cost of ownership equation.
If you’re curious what the switch might look like in your driveway, not just on paper, consider exploring EV vs gas total cost of ownership and browsing used electric trucks on Recharged. With verified battery health, fair market pricing, and EV specialists to walk you through financing, trade‑in, and delivery, you can run the numbers with confidence instead of guessing at what your next 15 mpg fill‑up will cost.
