Toyota · 2017
Prius Eco 1.8L 4-cyl
✓ EPA Verified
Regular Gasoline
Midsize Cars
Front-Wheel Drive
City
58
MPG
Combined
56
MPG
Highway
53
MPG
Annual Fuel Cost
$800
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$1,350
saved per year
Class Comparison — Midsize Cars
Top 10%
Better than 90 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 56 MPG
This vehicle
56 MPG
Class average
35 MPG
Class lowest
13 MPG
EPA Energy & Environment Scores
10
Energy Score
Out of 10
10
GHG Score
Out of 10
158 lbs
Annual CO₂
g/mile tailpipe CO₂
Yes
Start-Stop
Auto stop-start
Vehicle Specifications
Engine1.8L 4-cyl
TransmissionAutomatic (variable gear ratios)
DriveFront-Wheel Drive
Fuel TypeRegular Gasoline
Vehicle ClassMidsize Cars
TrimHybrid
Start-StopYes
EPA Vehicle ID38062

56 MPG combined makes the 2017 Toyota Prius Eco more than just a way to get around; it becomes a clear statement of careful resource use. It saves money at the pump. This Prius appeals to those who prioritize lower fuel costs without giving up the core functionality of a reliable, practical hatchback. It’s a conscious choice, acknowledging that while it may not offer thrilling driving, the satisfaction of nearly unmatched fuel efficiency makes up for it.

City and highway performance

The EPA estimates the Prius Eco’s economy at 58 MPG city and 53 MPG highway. The slightly higher city rating shows the car’s hybrid system works well in stop-and-go conditions. The electric motor handles much of the low-speed acceleration, reducing the gasoline engine’s work and saving fuel. On the highway, the 1.8L four-cylinder works harder to maintain speed because the electric motor provides less help at higher speeds. However, 53 MPG is still remarkable, easily beating most non-hybrid compact cars.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Toyota Prius Eco at $800. This is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may be higher or lower depending on your driving habits, the type of driving you do (city vs. highway), and changes in gasoline prices. However, the $800 figure provides a valuable benchmark, highlighting the significant cost savings compared to vehicles with lower fuel economy.

Real-world expectations

While the EPA figures provide a standard, real-world driving can change fuel economy. Things like fast acceleration, too much idling, and heavy loads can all hurt MPG. However, careful drivers can often meet or exceed the EPA estimates in everyday conditions, especially in good weather. Remember that optimal conditions can include using non-ethanol gasoline in warmer months, or making sure you don’t have extra items weighing the car down.

How it compares

The Prius Eco has competition in the very efficient car category. The Hyundai Ioniq Blue gets 58 MPG combined, matching the Prius Eco’s city rating and slightly beating its combined number. The standard Toyota Prius gets 52 MPG combined, showing the Eco variant’s focus on saving gas. Other plug-in hybrids like the Chevrolet Volt (with its electric range and then hybrid operation) target a similar buyer but can offer even better fuel savings for those with short commutes and consistent access to charging. For those interested in seeing all Toyota fuel economy data, the lineup reveals Toyota’s commitment to efficiency. And, learn more about PRIUS MPG across all years to see the evolution of efficiency over time.

Tips to maximize efficiency

Gentle acceleration is key to getting the most fuel economy in the Prius Eco. Avoid fast starts and stops, and instead choose a smooth, gradual increase in speed. The hybrid system is designed to work most efficiently when the engine is under minimal stress, so easing into acceleration will reduce gasoline consumption and rely more on the electric motor.

Use the car’s “EV” mode whenever you can, especially at low speeds and in stop-and-go traffic. This makes the car run only on electric power, using no gasoline. The EV mode has range limits and will stop working when the battery is empty, or if the car goes over a certain speed.

Regular maintenance is important for keeping good fuel economy. Make sure your tires have the right amount of air, as low tires increase rolling resistance and reduce MPG. And, keep up with scheduled oil changes and other maintenance to keep the engine running efficiently.

Keep extra weight out of the car. The heavier the car, the more energy it takes to speed up and maintain speed, which directly impacts fuel use. Remove any extra items from the trunk and passenger area to reduce the car’s weight.