42 MPG combined is a respectable figure for the 2021 Honda Clarity Plug-in Hybrid, but it’s a number often considered secondary by the car’s target demographic. Clarity buyers prioritize factors such as all-electric range, HOV lane access, and a commitment to reducing their carbon footprint. Gas mileage is a bonus, a reassuring metric but not the main reason for their purchase. The Clarity appeals to a specific buyer: often a suburban professional with a relatively short commute and access to home charging, for whom the plug-in hybrid functionality is more central than pure fuel efficiency.

City and highway performance

The EPA breaks down the Clarity’s fuel economy further, revealing 44 MPG in the city and 40 MPG on the highway. The slightly higher city MPG reflects the Clarity’s strength: using its electric motor in stop-and-go traffic. The regenerative braking system, which helps recapture energy during deceleration, is particularly effective in urban environments. Highway driving relies more on the 1.5L 4-cylinder engine after the battery’s initial charge is depleted, contributing to the somewhat lower highway rating. These figures demonstrate the Clarity’s design: optimized for maximizing electric driving in daily commutes and supplemented by gasoline power for longer trips.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2021 Honda Clarity Plug-in Hybrid is $1,050. This calculation is based on driving 15,000 miles per year, with an assumed split between city and highway driving, and using the national average fuel prices at the time of calculation. While individual expenses will vary slightly based on local fuel costs and driving habits, $1,050 provides a solid benchmark. Remember that this figure assumes consistent charging; those rarely plugging in can expect a higher annual fuel cost.

Real-world expectations

While the EPA estimates offer a good baseline, real-world fuel economy for the Clarity can fluctuate significantly depending on driving patterns and charging habits. Those who consistently charge their Clarity and predominantly drive short distances can expect to see significantly higher MPG figures, potentially even exceeding the EPA estimates. Drivers who rarely plug in and rely primarily on the gasoline engine may experience lower MPG, closer to a conventional hybrid’s performance. The Clarity’s onboard computer actively monitors and displays fuel economy data, enabling drivers to tailor their approach for optimum efficiency.

How it compares

The Clarity’s fuel economy positions it competitively within the plug-in hybrid segment. The Toyota Prius Prime, another popular option, achieves a combined 54 MPG, a notable advantage on paper. The now discontinued Chevrolet Volt, another plug-in hybrid with a different approach, offered around 42 MPG combined. The Hyundai Ioniq Plug-in Hybrid achieves an EPA-estimated 52 MPG combined. The Clarity offered a blend of electric range (47 miles), interior space, and Honda’s reputation for reliability. Those considering vehicles like the BMW 330e or Volvo S60 Recharge, both offering more performance and luxury, will find their fuel economy numbers (around 28 MPG combined for the BMW) fall well short of the Clarity’s focus on efficiency. Review all Honda fuel economy data to gauge overall brand performance.

Tips to maximize efficiency

Prioritize electric driving whenever possible. This means consistently charging the Clarity when parked at home or at public charging stations. Even a partial charge can significantly reduce gasoline consumption, particularly for short trips. Using the Clarity’s “HV” (Hybrid Vehicle) mode can be strategic on longer journeys. By engaging this mode, you can reserve the electric battery for later use, such as when entering a city or encountering stop-and-go traffic.

Gentle acceleration and braking can greatly improve fuel efficiency. Avoid aggressive starts and maintain a smooth, consistent speed whenever possible. Anticipate traffic conditions and ease off the accelerator gradually, allowing the regenerative braking system to recapture energy. Consult CLARITY MPG across all years to compare annual specs and MPG variations.

Tire pressure plays a critical role in fuel economy. Ensure your tires are properly inflated to the recommended pressure, typically found on a sticker located on the driver’s side doorjamb. Under-inflated tires increase rolling resistance, forcing the engine (or electric motor) to work harder.

Minimize unnecessary weight. Carrying excessive cargo adds strain on the powertrain and reduces fuel efficiency. Remove any items from the trunk or backseat that are not essential. Consider removing roof racks when not in use, as they increase aerodynamic drag.