Most Fuel-Efficient Car - Honda Insight

Fuel economy is one of the most important factors to consider when buying a new car. Even when gas prices are down, they won't stay that way forever.

Many cars sold today offer impressive fuel economy, especially in contrast to what you may be trading in. Below, we spotlight the most fuel-efficient cars based on Consumer Reports' overall fuel-economy test results.

Measuring fuel economy is one of more than 50 tests we conduct on each car we purchase. Our fuel-economy numbers are derived from a precision flow meter and are rounded to the nearest mile per gallon. CR's overall mileage results are calculated based on equal portions of city and highway driving.

This list starts with the most-efficient car, and it does not include plug-in vehicles, like the Honda Clarity and Toyota Prius Prime.

Complete test results can be found by clicking through to the model pages.

See our list of the 10 most fuel-efficient SUVs.


Honda Insight

Honda Insight

The Insight is our fuel economy champ among cars that don't have to be plugged in, thanks to its 54 mpg overall in our tests, which is 2 mpg better than the Toyota Prius. Based on the Civic sedan, the Insight has the same strengths and weaknesses. The ride is comfortable, its handling is secure but mundane, and the rear seat is relatively roomy. But the Insight suffers from a very low stance, which hurts getting in and out. The driver's seat is short on lower back support, and the controls are somewhat tricky, including the fussy, push-button gear selector. The car can loaf around on electric power alone at very low speeds, but when the gas engine awakes as more power is needed, it's loud. 

Read the complete Honda Insight road test

Make & Model

Overall MPG

City MPG

Highway MPG

Honda Insight

54

44

62


Toyota Prius

Toyota Prius

In our tests the Prius returned 52 mpg overall, which is among the best mileage for a car that doesn't have to be plugged in. Plus, the car handles responsively and rides comfortably. Colorful digital gauges dominate the dashboard with abundant fuel-economy information. The touch-screen infotainment system is fairly straightforward. The sensible Prius has always been about efficiency and low running costs. The car can drive solely on electric, usually up to about 25 mph, but the engine moans a bit when it kicks in. In addition, the seats have mediocre support, tire noise is noticeable, and the car's low stance makes it a challenge to get into and out of. The 2019 Prius has optional all-wheel drive, mild styling updates, and new trim names.

Read the complete Toyota Prius road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Toyota Prius Three

52

43

59


Hyundai Ioniq

Hyundai Ioniq

The Ioniq is the first direct challenger to the Toyota Prius. Evoking the Prius silhouette and hatchback configuration, the Ioniq hybrid matches it as a fuel-sipper with 52 mpg overall. Power comes from a 1.6-liter, four-cylinder engine, which, paired with the electric drive, puts out a combined 139 hp. The six-speed dual-clutch transmission isn't the smoothest, and there's some delay off the line. Like other hybrids, it can drive on electric power at low speeds. Handling lacks agility, and the ride is a bit unsettled but unobjectionable. Our SEL had unusually long stopping distances. A number of safety features, including automatic emergency braking and blind spot warning, are available. Android Auto and Apple CarPlay compatibility is standard. There are also plug-in and fully electric versions.

Read the complete Hyundai Ioniq road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Hyundai Ioniq

52

42

60


Toyota Prius Prime

Toyota Prius Prime

The Prime is a plug-in Prius that can usually drive about 23 miles on electricity only. But the gas engine tends to start up in cold weather and under full-throttle acceleration. It takes 2 hours to charge the Prime through a 240-volt connector and 5 hours on a regular 120-volt. When not running in EV mode, the Prime operates much like the regular Prius, alternating between electric and gas power, returning 50 mpg overall. With styling that's slightly different from that of the regular Prius, the Prime can hold only four passengers, and it loses the rear wiper. The infotainment system, with its large touch screen, is unintuitive to use. The compliant ride and responsive handling are quite similar to those of the regular Prius. 

Read the complete Toyota Prius Prime road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Toyota Prius Prime

133*/50**

38**

62**

  1. * = MPGe, ** = MPG on gas engine only

Honda Accord

Most Fuel-Efficient Cars - Honda Accord

The Accord is available with a choice of two turbocharged, four-cylinder engines. The base version is a new 192-hp, 1.5-liter mated to a continuously variable transmission, a combination that is mostly unobtrusive and delivers adequate power. The uplevel turbocharged 2.0-liter brings 252 hp and a slick 10-speed automatic transmission but features an unintuitive push-button gear selector. The Hybrid gets an impressive 47 mpg overall without sacrificing acceleration or trunk space. The new infotainment system is a big improvement and includes knobs for tuning and volume adjustment. Handling is responsive, and the ride is comfortable.

Read the complete Honda Accord road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Honda Accord Hybrid EX

47

40

52


Toyota Camry

Toyota Camry Hybrid

The Camry has a stylish look compared with past versions, and along with slightly more nimble handling. But it still is a comfortable, quiet car, and it stands as one of the best midsized sedans. The lower stance makes access a bit more difficult, and the rear seat is smaller than some competitors. The standard 2.5-liter four-cylinder engine provides good power and gets an impressive 32 mpg overall. A 3.5-liter V6 is also available. Both are paired to a new eight-speed automatic transmission that isn't super smooth. A very frugal hybrid LE gets 47 mpg overall without any sacrifice in trunk space. The Entune infotainment system is capable. Apple CarPlay has been added to the infotainment system for 2019

Read the complete Toyota Camry road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Toyota Camry Hybrid

47

39

53


Toyota Prius C

Toyota Prius C

This smaller, less expensive alternative to the regular Prius feels like a spartan subcompact with a hybrid powertrain. In the end, buyers pretty much get what they pay for, and it is no substitute for the real Prius. The C has a harsh ride, a noisy engine, and slow acceleration. The interior looks and feels cheap, the driving position and rear seats are cramped, and there's little cargo space. But its 37 mpg in city driving makes the Prius C one of the most frugal vehicles we've tested, and its 43 mpg overall is just 1 mpg less than the previous-generation Prius hatchback. Its tiny dimensions make it a natural for urban driving.

Read the complete Toyota Prius C road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Toyota Prius C Two

43

37

48


Kia Niro

Kia Niro

Kia's five-passenger Niro marries good fuel economy with cargo versatility. This front-wheel-drive hybrid uses a 1.6-liter four-cylinder engine, which, in conjunction with the electric drive unit, puts out a combined 139 hp. This combo is mated to a six-speed dual-clutch transmission. Having the lithium-ion battery located under the rear seat creates a flat cargo floor when the rear seats are folded. We got 43 mpg overall, which is good but not as impressive as the Hyundai Ioniq or Toyota Prius. A plug-in hybrid is also available. The handling lacks agility, and the ride is a bit choppy. The optional power driver's seat provides better support than the standard seats. An EV version with a promised 239-mile range will be available in 2019.

Read the complete Kia Niro road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Kia Niro EX

43

33

52


Toyota Avalon

Toyota Avalon

Toyota's flagship Avalon is roomy, rides comfortably, and has easy-to-use controls, which make it a pleasant large car. The 3.5-liter V6 engine and eight-speed automatic transmission deliver smooth and robust acceleration. The hybrid version has a 2.5-liter four-cylinder engine that returned 42 mpg overall in our tests, which is impressive for such a large sedan. Ride comfort is excellent; it is plusher than most Lexus models. The cabin is quiet and lavishly furnished, particularly with the Limited trim. Handling is responsive and secure, but the car's low stance hurts ease of access. The infotainment system includes a touch screen that is easy to use. This is the first Toyota to offer Apple CarPlay.

Read the complete Toyota Avalon road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Toyota Avalon Hybrid XLE

42

32

52


Chevrolet Malibu

Chevrolet Malibu Hybrid

Chevrolet's Malibu is competitive among midsized sedans, with a quiet cabin and easy-to-use controls. In tests we found the sedan to be quiet, with a comfortable ride and responsive handling. Two four-cylinder turbo engines are offered. We tested the 1.5-liter turbo with a six-speed automatic and got 29 mpg overall. It gets a CVT for 2019. The second engine is a more powerful and refined 2.0-liter turbo mated to a nine-speed automatic. A hybrid that utilizes some of the Chevrolet Volt's technology is also available. It got an impressive 41 mpg overall in our tests. Up front is a roomy, comfortable cockpit and an updated version of Chevrolet's MyLink infotainment system. But the cloth seats are a bit short on support. The roomy rear seat lets long-legged passengers stretch out.

Read the complete Chevrolet Malibu Hybrid road test.

Make & Model

Overall MPG

City MPG

Highway MPG

Chevrolet Malibu Hybrid

41

33

49

How Accurate Are Fuel Economy Estimates?

How accurate are the gas mileage estimates that come with new cars? On the 'Consumer 101' TV show, Consumer Reports' expert Ryan Pszczolkowski explains how CR measure the amount of fuel an engine is using—and offers tips for maximizing your fuel economy.