2018 Toyota Prius MPG and Fuel Cost
Every 2018 Toyota Prius is a hybrid, rated 52 to 56 mpg combined across 2 versions, plus a plug-in hybrid.
EPA fuel economy
2018 Toyota Prius · 3 EPA-tested versionsBest EPA rating
56MPG combined
58 city 53 highway
$1,150 a year to fuel
1.8L 4-cyl hybrid · FWD · CVT · Eco
Best version saves $5,750 in fuel over 5 years vs the average new vehicle (EPA)
Fuel cost: 15,000 miles a year at EPA's $4.32 a gallon (regular gas).
At EPA's price assumptions, fuel costs $1,150 to $1,250 a year. The plug-in hybrid adds 25 miles of electric range and 133 MPGe on electricity. Ratings for the best versions are unchanged from 2017.
Every 2018 Prius version
EPA's ratings for each version it tested. Fuel cost is EPA's estimate for 15,000 miles a year at its current prices; for plug-in hybrids it assumes typical charging.
| Version | Combined | City / Hwy | Fuel / year |
|---|---|---|---|
| Hybrid | |||
1.8L 4-cyl hybrid · FWD · CVT · Eco Best
EPA listing: Prius Eco |
56 mpg | 58 / 53 | $1,150 |
1.8L 4-cyl hybrid · FWD · CVT
EPA listing: Prius |
52 mpg | 54 / 50 | $1,250 |
| Plug-in hybrid | |||
1.8L 4-cyl plug-in hybrid · FWD · CVT
EPA listing: Prius Prime · 133 MPGe on electricity · 25 mi electric range · MPG shown is running on gas |
54 mpg | 55 / 53 | $850 with charging (EPA); gas only $1,200 |
Fuel cost at your prices
EPA's annual cost uses 15,000 miles a year, 55% city driving and its current prices: $4.32 a gallon for regular gas. Change the numbers to match your driving.
| Version | Per year | 5 years |
|---|---|---|
1.8L 4-cyl hybrid · FWD · CVT · Eco | $1,157 | $5,786 |
1.8L 4-cyl hybrid · FWD · CVT | $1,246 | $6,231 |
1.8L 4-cyl plug-in hybrid · FWD · CVT (on gas) | $1,200 | $6,000 |
At the default settings the results match EPA's annual cost before EPA rounds it to the nearest $50. Plug-in hybrids are calculated running on gas only.
Toyota Prius MPG by model year
The best-rated version in each model year; the highlighted year is this page. Hybrid: 56 to 57 mpg (every year from 2016 to 2026); 57 since 2023.
2018: hybrid 56 mpgTap or drag across the chart for other years.
Show as a table
| Model year | Best hybrid version |
|---|---|
| 2016 | 56 |
| 2017 | 56 |
| 2018 | 56 |
| 2019 | 56 |
| 2020 | 56 |
| 2021 | 56 |
| 2022 | 56 |
| 2023 | 57 |
| 2024 | 57 |
| 2025 | 57 |
| 2026 | 57 |
How the 2018 Prius compares
2018 compact cars covered on this site, ranked by their best combined rating. Fuel cost is for each model's cheapest version to run, at EPA's prices.
| 2018 model | Best combined | Best gas | Fuel / year |
|---|---|---|---|
Toyota Prius This page Best: hybrid |
56 mpg | – | $1,150 |
Best: gas |
36 mpg | 36 mpg | $1,800 |
Best: gas |
35 mpg | 35 mpg | $1,850 |
Best: gas |
34 mpg | 34 mpg | $1,900 |
Best: gas |
32 mpg | 32 mpg | $2,050 |
Best: gas |
32 mpg | 32 mpg | $2,050 |
Best: gas |
32 mpg | 32 mpg | $2,050 |
2018 Prius recalls and complaints
NHTSA lists 1 safety recall and 52 owner complaints for the 2018 Prius.What they cover, and crash test ratingsQuestions
Does the 2018 Toyota Prius need premium gas?
No. EPA lists every 2018 Toyota Prius version on regular gasoline.
How does the 2018 Prius's MPG compare with the 2017?
For 2018, the best hybrid version is rated 56 mpg, the same as the year before.
Sources and method
- US EPA and Department of Energy fuel economy data (fueleconomy.gov), file dated Sep 18, 2026.
- EPA fuel price assumptions: regular $4.32, midgrade $4.93, premium $5.32, diesel $6.29 a gallon; electricity $0.15 per kWh.
- Recall and complaint counts: NHTSA recall file dated Sep 27, 2026 and complaint file dated Sep 26, 2026.
Ratings are EPA estimates. Real-world mileage depends on how, where and in what weather you drive. How we build these pages. Spotted an error? Tell us.