54 MPG combined defines the 2017 Toyota Prius Prime. This isn’t a car for adrenaline junkies or image-conscious buyers; it’s for pragmatists, penny-pinchers, and environmentally aware drivers who prioritize efficiency. The Prius Prime focuses on delivering maximum mileage, and that focus defines it.

City and highway performance

The EPA estimates the Prius Prime’s fuel economy at 55 MPG city and 53 MPG highway. This difference shows the advantages of the Prime’s hybrid powertrain in stop-and-go conditions. The electric motor handles more of the workload at lower speeds, regenerating energy during braking and reducing reliance on the gasoline engine. On the highway, the engine takes over more frequently to maintain higher speeds, resulting in a slightly lower rating, but still exceptional.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Toyota Prius Prime at $800. This is based on driving 15,000 miles per year and the national average fuel prices when the calculation was done. For drivers who drive fewer miles annually, or those who live in areas with lower fuel costs, the actual spending could be lower. Those who drive more miles or live where gas is more expensive will see a higher annual fuel bill. But regardless, $800 is a tiny annual fuel bill.

Real-world expectations

The EPA estimates provide a baseline, but real-world fuel economy can vary based on driving habits, traffic, and weather. Aggressive acceleration, frequent braking, and extended idling will negatively impact the Prius Prime’s MPG. Cold weather, which reduces battery efficiency, can also play a role. Drivers who adopt a smooth driving style, anticipate traffic, and use the car’s regenerative braking system can often meet or exceed the EPA estimates. The Prius Prime encourages efficient driving; its dashboard displays provide real-time feedback, rewarding drivers for maximizing fuel economy.

How it compares

The 2017 Prius Prime stands out. The standard Prius achieves a stellar 52 MPG combined, making it a close sibling in efficiency. Other competitors include hybrid variants of the Hyundai Ioniq, which achieves around 58 MPG combined, and the Ford C-Max Hybrid, which used to achieve around 40MPG combined. Even some smaller, non-hybrid cars struggle to match the Prime’s numbers. This difference in MPG translates to savings at the pump, which is why the Prime appeals to cost-conscious buyers. For more information on Toyota’s lineup, explore all Toyota fuel economy data. For a broader historical perspective on the model, check the PRIUS MPG across all years.

Tips to maximize efficiency

Gentle acceleration is key to the Prius Prime’s efficiency. Avoid pressing hard on the accelerator, especially from a standstill. Smooth acceleration allows the electric motor to contribute more power, reducing reliance on the gasoline engine and saving fuel.

Use the regenerative braking system. Anticipate traffic lights and slowdowns, and gently ease off the accelerator to allow the car to slow down using regenerative braking. This captures energy that would otherwise be lost as heat and returns it to the battery, extending your electric driving range and improving overall fuel economy.

Optimize tire pressure. Check your tire pressure and inflate your tires to the recommended pressure, which is typically found on a sticker inside the driver’s side doorjamb. Properly inflated tires reduce rolling resistance, which boosts fuel economy.

Minimize accessory usage. Air conditioning, heating, and other electrical accessories draw power and reduce fuel economy. Use them sparingly, especially during short trips, to maximize your mileage.

Plan trips strategically, blending EV and Hybrid driving. The Prius Prime is a plug-in hybrid, offering a limited all-electric range. If possible, use the EV mode for shorter trips around town and the hybrid mode for longer journeys where its fuel efficiency can still be useful. Charging whenever possible is essential to minimizing overall fuel cost.