- The most efficient non-hybrid sedans achieve 34–36 MPG combined, costing $1,033–$1,094 per year to fuel.
- Hybrid sedans reach 49–57 MPG, cutting annual fuel costs as low as $653.
- The least efficient sedans (large, V6-powered) drop to 20–24 MPG, costing over $1,550 per year.
- Choosing the most efficient sedan (57 MPG hybrid) over the least efficient (24 MPG V6) saves $897 per year in fuel.
Shopping across body styles? See how these numbers compare to the most fuel efficient SUVs and crossovers or the most fuel efficient pickup trucks.
01 Top 10: Gasoline-Only Sedans
The most efficient non-hybrid sedans achieve 34–36 MPG combined ($1,033–$1,094/year to fuel), while hybrid sedans reach 49–57 MPG, cutting annual fuel costs as low as $653. Among conventional gasoline sedans (no hybrid or diesel powertrain), the most efficient current models are a mix of midsize and compact cars with small-displacement four-cylinder engines. These vehicles prioritize low weight and aerodynamic design.
EPA, Fuel Economy Guide, MY 2025; gasoline-only sedans ranked by combined MPG| Rank | Vehicle Description | Combined MPG | Annual Fuel Cost |
|---|---|---|---|
| 1 | Midsize sedan A | 36 | $1,033 |
| 2 | Midsize sedan B | 36 | $1,033 |
| 3 | Compact sedan A | 35 | $1,063 |
| 4 | Compact sedan B | 35 | $1,063 |
| 5 | Compact sedan C | 35 | $1,063 |
| 6 | Midsize sedan C | 34 | $1,094 |
| 7 | Midsize sedan D | 34 | $1,094 |
| 8 | Midsize sedan E | 34 | $1,094 |
| 9 | Compact sedan D | 34 | $1,094 |
| 10 | Compact sedan E | 34 | $1,094 |
02 Top 10: Hybrid Sedans
Hybrid sedans achieve significantly higher fuel economy by combining an electric motor with a gasoline engine. The regenerative braking system captures energy normally lost during deceleration, and the electric motor handles low-speed driving where gasoline engines are least efficient.
EPA, Fuel Economy Guide, MY 2025; non-plug-in hybrid sedans| Rank | Vehicle Description | Combined MPG | Annual Fuel Cost |
|---|---|---|---|
| 1 | Midsize hybrid sedan A | 57 | $653 |
| 2 | Midsize hybrid sedan B | 54 | $689 |
| 3 | Midsize hybrid sedan C | 54 | $689 |
| 4 | Midsize hybrid sedan D | 52 | $715 |
| 5 | Midsize hybrid sedan E | 51 | $729 |
| 6 | Midsize hybrid sedan F | 50 | $744 |
| 7 | Midsize hybrid sedan G | 50 | $744 |
| 8 | Compact hybrid sedan A | 50 | $744 |
| 9 | Midsize hybrid sedan H | 49 | $759 |
| 10 | Midsize hybrid sedan I | 49 | $759 |
Estimate your vehicle's driving cost using official EPA fuel economy data.
Use the Calculator03 Sedan Efficiency by Size Class
The EPA classifies sedans by interior volume. Fuel economy does not decrease steadily with size: midsize sedans actually post the best average in this data, edging out compact sedans, because the subcompact class includes low-volume two-seat sports cars and performance coupes that pull its average down.
EPA/DOE Fuel Economy Guide database, gasoline-fueled vehicles, model years 2024–2025 (unweighted average of comb08 by EPA VClass); EPA, The 2025 Automotive Trends Report (EPA-420-R-26-001)| Size Class | Avg Combined MPG | Annual Fuel Cost |
|---|---|---|
| Midsize sedan | 29.2 | $1,274 |
| Compact sedan | 28.2 | $1,319 |
| Large sedan | 25.0 | $1,488 |
| Subcompact sedan | 23.1 | $1,610 |
Moving from a midsize sedan (the most efficient class here) to a subcompact sedan (the least efficient, due to the sports-car/coupe mix noted above) costs an additional $336 per year in fuel at average MPG. The individual "top 10" models listed above still beat every class average shown here: a well-chosen subcompact or compact model can out-perform the midsize class average, even though the subcompact class average itself is the lowest.
04 Engine Size and Sedan MPG
Engine displacement is a strong predictor of fuel economy among sedans. Most efficient sedans use four-cylinder engines between 1.5L and 2.5L, while less efficient models employ V6 or turbocharged engines with higher displacement.
EPA, Fuel Economy Guide, MY 2025; engine displacement vs combined MPG for sedans| Engine Type | Avg Combined MPG | Annual Fuel Cost | Cost vs 2.0L |
|---|---|---|---|
| 1.5L 4-cylinder | 37 | $1,005 | −$89 |
| 2.0L 4-cylinder | 34 | $1,094 | n/a |
| 2.5L 4-cylinder | 31 | $1,200 | +$106 |
| 2.0L turbo 4-cylinder | 30 | $1,240 | +$146 |
| 3.0L turbo V6 | 25 | $1,488 | +$394 |
| 3.5L V6 | 24 | $1,550 | +$456 |
A 3.5L V6 sedan costs $456 more per year to fuel than a 2.0L four-cylinder. Turbocharging a 2.0L engine provides more power but typically reduces fuel economy by 3–4 MPG compared to a naturally aspirated version of the same displacement.
05 Five-Year Fuel Cost Range
Over a typical 5-year ownership period, the fuel cost difference between the most and least efficient sedans is substantial.
5-year projections at 12,000 miles/year, $3.10/gal (EIA, Short-Term Energy Outlook, September 2026, Table 2: Energy Prices; 2025 annual average regular gasoline retail price)| Sedan Type | 5-Year Fuel Cost | 5-Year Savings vs Avg Sedan |
|---|---|---|
| Best hybrid (57 MPG) | $3,263 | $3,677 |
| Best gas-only (36 MPG) | $5,167 | $1,773 |
| Avg compact (28.2 MPG) | $6,596 | $344 |
| Avg sedan overall (26.8 MPG) | $6,940 | n/a |
| Avg large sedan (25.0 MPG) | $7,440 | −$500 |
| Least efficient (20 MPG, V6) | $9,300 | −$2,360 |
The best hybrid sedan saves nearly $3,700 in fuel over 5 years compared to the average sedan. Even among gas-only models, choosing a 36 MPG midsize sedan over a 20 MPG large sedan saves more than $4,100 over 5 years.
06 Data Sources
- EPA: Fuel Economy Guide, Model Year 2025. fueleconomy.gov
- EPA: "The 2025 EPA Automotive Trends Report" (EPA-420-R-26-001). epa.gov
- EIA: Weekly Retail Gasoline Prices. eia.gov