The 100 Most Fuel-Efficient Cars in 2021

Have you ever wondered what the most fuel efficient cars manufactured in 2021 are? In this article, we'll list out the best 100 fuel efficient cars from 2021 with information on each of them!

How to Determine Fuel Efficiency

The list of the best fuel efficient cars on this page is based on one simple metric provided to us by the U.S. Department of Energy: the combined miles per gallon (MPG).

This metric is calculated by taking the total miles driven by the car and dividing it by the total gallons of fuel used.

Manufacturers provide this information to the Department of Energy, they provide it to us, and we provide it to you after sifting and organizing it.

The combined miles per gallon (MPG) is a measure of how much fuel the car uses per mile and is a good indicator of how efficient the car is. It's a combination of both city and highway driving, to give you a more overall accurate MPG.

With that out of the way, let's dive into the list. You can click the links in the table below to see more detailed information about each car.

Best 2021 Cars by Miles per Gallon

The list below is sorted by the combined miles per gallon (MPG) of the car, with the highest MPG at the top. This list includes both electric and regular fuel cars.

Car Combined MPG Fuel Cost
Tesla Model 3 Standard Range Plus... 142 $450
Tesla Model 3 Long Range AWD 134 $500
Hyundai Ioniq Electric 133 $500
Tesla Model Y Standard Range RWD 129 $500
Tesla Model Y Long Range AWD 125 $550
Hyundai Kona Electric 120 $550
Tesla Model S Long Range 120 $550
Chevrolet Bolt EV 118 $550
Kandi K27 114 $600
BMW i3 113 $600
BMW i3s 113 $600
Tesla Model 3 Performance AWD 113 $600
Kia Niro Electric 112 $600
Nissan Leaf (40 kW-hr battery pack) 111 $600
Tesla Model Y Performance AWD 111 $600
Tesla Model S Performance (19in W... 110 $600
MINI Cooper SE Hardtop 2 door 108 $600
Nissan Leaf (62 kW-hr battery pack) 108 $600
Tesla Model X Long Range Plus 105 $600
Nissan Leaf SV/SL (62 kW-hr batter... 104 $650
Ford Mustang Mach-E RWD Californ... 101 $650
Tesla Model S Plaid (21in Wheels) 101 $650
Ford Mustang Mach-E RWD 100 $650
Volkswagen ID.4 Pro 99 $650
Ford Mustang Mach-E RWD Extended 97 $650
Tesla Model X Performance (20in W... 97 $650
Volkswagen ID.4 1st 97 $700
Volkswagen ID.4 AWD Pro 97 $700
Volkswagen ID.4 Pro S 97 $700
Tesla Model S Performance (21in W... 96 $700
Ford Mustang Mach-E AWD 93 $700
Volkswagen ID.4 AWD Pro S 93 $700
Polestar 2 92 $700
Ford Mustang Mach-E AWD Extended 90 $750
Tesla Model X Performance (22in W... 86 $750
Ford Mustang Mach-E GT 84 $800
Ford Mustang Mach-E GT Performance 82 $800
Porsche Taycan 4S Perf Battery 79 $850
Porsche Taycan Perf Battery 79 $800
Volvo XC40 AWD BEV 79 $850
Audi e-tron 78 $850
Audi e-tron Sportback 77 $850
Porsche Taycan 4S Perf Battery Plus 77 $850
Jaguar I-Pace EV400 76 $850
Porsche Taycan 4 Cross Turismo 76 $850
Porsche Taycan 4S Cross Turismo 75 $900
Porsche Taycan Perf Battery Plus 75 $900
Porsche Taycan Turbo 73 $900
Porsche Taycan Turbo S Cross Turismo 73 $900
Porsche Taycan Turbo Cross Turismo 72 $900
Porsche Taycan Turbo S 70 $950
Hyundai Ioniq Blue 59 $1,050
Toyota Prius Eco 56 $1,100
Hyundai Ioniq 55 $1,150
Hyundai Elantra Hybrid Blue 54 $1,150
Toyota Prius Prime 54 $1,150
Honda Insight 52 $1,200
Hyundai Ioniq Plug-in Hybrid 52 $1,200
Hyundai Sonata Hybrid Blue 52 $1,200
Toyota Camry Hybrid LE 52 $1,200
Toyota Corolla Hybrid 52 $1,200
Toyota Prius 52 $1,200
Hyundai Elantra Hybrid 50 $1,250
Kia Niro FE 50 $1,250
Kia Niro 49 $1,300
Toyota Prius AWD 49 $1,300
Honda Accord Hybrid 48 $1,300
Honda Insight Touring 48 $1,300
Hyundai Sonata Hybrid 47 $1,350
Kia Niro Plug-in Hybrid 46 $1,350
Toyota Camry Hybrid SE/XLE/XSE 46 $1,350
Lexus ES 300h 44 $1,400
Toyota Avalon Hybrid XLE 44 $1,400
Honda Accord Hybrid Sport/Touring 43 $1,450
Kia Niro Touring 43 $1,450
Toyota Avalon Hybrid 43 $1,450
Honda Clarity Plug-in Hybrid 42 $1,500
Lexus UX 250h 42 $1,500
Ford Escape FWD HEV 41 $1,550
Ford Escape AWD HEV 40 $1,550
Ford Escape FWD PHEV 40 $1,550
Toyota RAV4 Hybrid AWD 40 $1,550
Lexus UX 250h AWD 39 $1,600
Mitsubishi Mirage 39 $1,600
Toyota Venza AWD 39 $1,600
Honda CR-V Hybrid AWD 38 $1,650
Toyota RAV4 Prime 4WD 38 $1,650
Hyundai Elantra 37 $1,700
Kia Sorento Hybrid 37 $1,700
Mitsubishi Mirage G4 37 $1,700
Honda Civic 4Dr 36 $1,750
Hyundai Accent 36 $1,750
Kia Rio 36 $1,750
Mitsubishi Mirage 36 $1,750
Toyota Highlander Hybrid 36 $1,750
Toyota Sienna Hybrid 2WD 36 $1,750
Hyundai Elantra 35 $1,800
Kia Forte FE 35 $1,800
Mazda 2 35 $1,800
Mitsubishi Mirage G4 35 $1,800

Best 2021 Regular Fuel Cars by Miles per Gallon

The table below contains the best 2021 regular fuel cars by combined miles per gallon (MPG).

Car Combined MPG Fuel Cost
Chevrolet Silverado 2WD (Automatic 10-spd) 27 $2,850
Ford Transit Connect Wagon LWB FFV (Automatic (S8)) 26 $2,400
GMC Sierra 2WD (Automatic 10-spd) 26 $2,950
Ram 1500 2WD (Automatic 8-spd) 26 $2,950
Ram 1500 HFE 2WD (Automatic 8-spd) 26 $2,950
Ford Transit Connect Van FFV (Automatic (S8)) 25 $2,500
Jeep Wrangler 4dr EcoDiesel 4WD (Automatic 8-spd) 25 $3,100
Chevrolet Silverado 4WD (Automatic 10-spd) 24 $3,200
Chevrolet Tahoe 2WD (Automatic 10-spd) 24 $3,200
GMC Sierra 4WD (Automatic 10-spd) 24 $3,200
GMC Sierra 4WD AT4 (Automatic 10-spd) 24 $3,200
Jeep Gladiator EcoDiesel 4WD (Automatic 8-spd) 24 $3,200
Jeep Gladiator Rubicon EcoDiesel 4WD (Automatic 8-spd) 24 $3,200
Land Rover Range Rover (Automatic (S8)) 24 $3,200
Land Rover Range Rover Sport (Automatic (S8)) 24 $3,200
Ram 1500 4WD (Automatic 8-spd) 24 $3,200
Cadillac Escalade 2WD (Automatic 10-spd) 23 $3,350
Chevrolet Colorado 2WD (Automatic 6-spd) 23 $3,350
Chevrolet Suburban 2WD (Automatic 10-spd) 23 $3,350
Ford F150 Pickup 4WD (Automatic (S10)) 23 $3,350
GMC Canyon 2WD (Automatic 6-spd) 23 $3,350
GMC Yukon 2WD (Automatic 10-spd) 23 $3,350
GMC Yukon XL 2WD (Automatic 10-spd) 23 $3,350
Jeep Wrangler Rubic 4dr EcoDiesel 4WD (Automatic 8-spd) 23 $3,350
Cadillac Escalade 4WD (Automatic 10-spd) 22 $3,500
Chevrolet Colorado 4WD (Automatic 6-spd) 22 $3,500
Chevrolet Suburban 4WD (Automatic 10-spd) 22 $3,500
Chevrolet Tahoe 4WD (Automatic 10-spd) 22 $3,500
GMC Canyon 4WD (Automatic 6-spd) 22 $3,500
GMC Yukon 4WD (Automatic 10-spd) 22 $3,500
GMC Yukon XL 4WD (Automatic 10-spd) 22 $3,500
Ford F150 Pickup 2WD FFV (Automatic (S10)) 21 $3,000
Ford F150 Pickup 2WD FFV (Automatic (S10)) 20 $3,150
Ford F150 Pickup 4WD FFV (Automatic (S10)) 20 $3,150
Chevrolet Colorado ZR2 4WD (Automatic 6-spd) 19 $4,050
Ford Explorer FFV AWD (Automatic (S10)) 19 $3,300
Ford F150 Pickup 2WD FFV (Automatic (S10)) 19 $3,300
Ford F150 Pickup 4WD FFV (Automatic (S10)) 19 $3,300
Ford F150 Pickup 4WD FFV (Automatic (S10)) 18 $3,500
Chevrolet Silverado 2WD (Automatic 6-spd) 16 $3,900
Chevrolet Silverado 4WD (Automatic 6-spd) 16 $3,900
Ford Transit T150 Wagon 2WD FFV (Automatic (S10)) 16 $3,900
Ford Transit T150 Wagon 4WD FFV (Automatic (S10)) 16 $3,900
GMC Sierra 2WD (Automatic 6-spd) 16 $3,900
GMC Sierra 4WD (Automatic 6-spd) 16 $3,900

Conclusion

The most fuel efficient car of 2021 is the Tesla Model 3 Standard Range Plus RWD. It has a combined MPG of 142 and costs $450 per year to drive it.

The most fuel efficient non-electric car of 2021 is the Chevrolet Silverado 2WD. It has a combined MPG of 27 and costs $2,850 per year to drive it.

Most Fuel Efficient Cars By Year

If you want to continue researching the best fuel efficient cars of all time, you can also look at the list of cars by year.

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  • "The 100 Most Fuel-Efficient Cars in 2021". MPG Buddy. Accessed on October 6, 2022. http://mpgbuddy.com/most-fuel-efficient-cars-in-2021.

  • "The 100 Most Fuel-Efficient Cars in 2021". MPG Buddy, http://mpgbuddy.com/most-fuel-efficient-cars-in-2021. Accessed 6 October, 2022

  • The 100 Most Fuel-Efficient Cars in 2021. MPG Buddy. Retrieved from http://mpgbuddy.com/most-fuel-efficient-cars-in-2021.