Most Fuel Efficient 2021 Subcompact Cars
The following table compares the fuel economies of the top 100 most fuel-efficient 2021 subcompact cars.
The table includes EV, Plug-in Hybrid, Hybrid vehicles.
The annual fuel cost (shown in the right-most column) is calculated based on an estimated annual mileage of 15,000 miles,
of which 55% of the miles are city driving, and 45% of the miles are highway driving.
The calculation assumes a fuel cost of $5.00 per gallon.
Table 1. Most Fuel Efficient Subcompact Cars (2021 models)
Include:
| Rank | Brand | Model Year | Vehicle Type | Combined MPG | City MPG |
Highway MPG | Annual Cost |
|---|---|---|---|---|---|---|---|
| 1 | BMW | 2021 i3s | Electric vehicle | 113 | 124 | 102 | $663 |
| 2 | BMW | 2021 i3 | Electric vehicle | 113 | 124 | 102 | $663 |
| 3 | MINI | 2021 Cooper SE Hardtop 2 door | Electric vehicle | 108 | 115 | 100 | $696 |
| 4 | Chevrolet | 2021 Spark | 33 | 30 | 38 | $2,263 | |
| 5 | Chevrolet | 2021 Spark ACTIV | 33 | 30 | 37 | $2,287 | |
| 6 | BMW | 2021 i3 with Range Extender | Plug-in Hybrid | 31 | 30 | 31 | $2,463 |
| 7 | MINI | 2021 Cooper Hardtop 2 door | 31 | 28 | 37 | $2,385 | |
| 8 | BMW | 2021 i3s with Range Extender | Plug-in Hybrid | 31 | 30 | 31 | $2,463 |
| 9 | MINI | 2021 Cooper Hardtop 4 door | 31 | 28 | 37 | $2,385 | |
| 10 | MINI | 2021 Cooper S Hardtop 2 door | 30 | 26 | 35 | $2,550 | |
| 11 | MINI | 2021 Cooper S Hardtop 4 door | 30 | 26 | 35 | $2,550 | |
| 12 | Lexus | 2021 LC 500h | Hybrid | 29 | 26 | 34 | $2,579 |
| 13 | BMW | 2021 430i Coupe | 29 | 26 | 34 | $2,579 | |
| 14 | Mercedes-Benz | 2021 A220 | 29 | 25 | 36 | $2,587 | |
| 15 | MINI | 2021 John Cooper Works Hardtop | 29 | 26 | 34 | $2,579 | |
| 16 | Mercedes-Benz | 2021 A220 4matic | 28 | 25 | 34 | $2,642 | |
| 17 | BMW | 2021 230i Coupe | 28 | 25 | 32 | $2,704 | |
| 18 | Audi | 2021 A5 quattro | Hybrid | 27 | 24 | 31 | $2,807 |
| 19 | Mercedes-Benz | 2021 C300 Coupe | 27 | 24 | 33 | $2,741 | |
| 20 | BMW | 2021 430i xDrive Coupe | 27 | 24 | 33 | $2,741 | |
| 21 | BMW | 2021 230i Convertible | 27 | 23 | 33 | $2,816 | |
| 22 | BMW | 2021 430i Convertible | 27 | 24 | 33 | $2,741 | |
| 23 | Audi | 2021 A5 Cabriolet quattro | Hybrid | 26 | 23 | 31 | $2,882 |
| 24 | Karma | 2021 Revero GT (21-inch wheels) | Plug-in Hybrid | 26 | 27 | 25 | $2,877 |
| 25 | Mercedes-Benz | 2021 C300 4matic Coupe | 26 | 23 | 32 | $2,848 | |
| 26 | Karma | 2021 GS-6 (21-inch wheels) | Plug-in Hybrid | 26 | 27 | 25 | $2,877 |
| 27 | Mercedes-Benz | 2021 C300 Convertible | 26 | 23 | 31 | $2,882 | |
| 28 | Audi | 2021 TT Coupe quattro | 26 | 23 | 31 | $2,882 | |
| 29 | Mercedes-Benz | 2021 E450 Coupe | Hybrid | 26 | 23 | 31 | $2,882 |
| 30 | BMW | 2021 M440i Convertible | Hybrid | 26 | 23 | 31 | $2,882 |
| 31 | MINI | 2021 John Cooper Works GP | 26 | 24 | 30 | $2,843 | |
| 32 | Mercedes-Benz | 2021 E450 4matic Convertible | Hybrid | 25 | 23 | 29 | $2,957 |
| 33 | BMW | 2021 840i Convertible | 25 | 22 | 29 | $3,038 | |
| 34 | Chevrolet | 2021 Camaro | 25 | 22 | 30 | $3,000 | |
| 35 | Audi | 2021 TTS Coupe | 25 | 23 | 29 | $2,957 | |
| 36 | Mercedes-Benz | 2021 C300 4matic Convertible | 25 | 22 | 30 | $3,000 | |
| 37 | Lexus | 2021 RC 300 | 25 | 21 | 31 | $3,052 | |
| 38 | BMW | 2021 840i Coupe | 25 | 23 | 30 | $2,918 | |
| 39 | BMW | 2021 M440i xDrive Coupe | Hybrid | 25 | 22 | 31 | $2,963 |
| 40 | Mercedes-Benz | 2021 E450 4matic Coupe | Hybrid | 25 | 23 | 30 | $2,918 |
| 41 | Mercedes-Benz | 2021 AMG A35 4matic | 25 | 22 | 29 | $3,038 | |
| 42 | Ford | 2021 Mustang | 25 | 21 | 32 | $3,018 | |
| 43 | Mercedes-Benz | 2021 E450 Convertible | Hybrid | 25 | 23 | 30 | $2,918 |
| 44 | BMW | 2021 M240i Convertible | 24 | 21 | 30 | $3,089 | |
| 45 | BMW | 2021 M240i xDrive Convertible | 24 | 21 | 30 | $3,089 | |
| 46 | BMW | 2021 230i xDrive Convertible | 24 | 21 | 30 | $3,089 | |
| 47 | Mercedes-Benz | 2021 AMG E53 4matic Plus Coupe | Hybrid | 24 | 21 | 28 | $3,169 |
| 48 | BMW | 2021 230i xDrive Coupe | 24 | 21 | 30 | $3,089 | |
| 49 | Audi | 2021 TT RS | 24 | 20 | 30 | $3,187 | |
| 50 | BMW | 2021 M240i Coupe | 24 | 21 | 30 | $3,089 | |
| 51 | BMW | 2021 M240i xDrive Coupe | 24 | 21 | 30 | $3,089 | |
| 52 | Ford | 2021 Mustang HO Coupe | 23 | 20 | 27 | $3,312 | |
| 53 | Ford | 2021 Mustang Convertible | 23 | 20 | 28 | $3,267 | |
| 54 | Lexus | 2021 RC 350 | 23 | 20 | 28 | $3,267 | |
| 55 | BMW | 2021 840i xDrive Coupe | 23 | 20 | 27 | $3,312 | |
| 56 | BMW | 2021 840i xDrive Convertible | 23 | 20 | 27 | $3,312 | |
| 57 | Mercedes-Benz | 2021 AMG E53 4matic Plus Convertible | Hybrid | 23 | 21 | 27 | $3,214 |
| 58 | Audi | 2021 S5 | 23 | 20 | 28 | $3,267 | |
| 59 | Audi | 2021 S5 Cabriolet | 22 | 20 | 26 | $3,360 | |
| 60 | Infiniti | 2021 Q60 AWD | 22 | 19 | 27 | $3,421 | |
| 61 | Ford | 2021 Mustang HO Convertible | 22 | 19 | 26 | $3,469 | |
| 62 | Lexus | 2021 RC 300 AWD | 22 | 19 | 26 | $3,469 | |
| 63 | Karma | 2021 Revero GT (22-inch wheels) | Plug-in Hybrid | 22 | 22 | 21 | $3,482 |
| 64 | Lexus | 2021 RC 350 AWD | 22 | 19 | 26 | $3,469 | |
| 65 | Karma | 2021 GS-6 (22-inch wheels) | Plug-in Hybrid | 22 | 22 | 21 | $3,482 |
| 66 | Mercedes-Benz | 2021 AMG C43 4matic Coupe | 22 | 19 | 27 | $3,421 | |
| 67 | Infiniti | 2021 Q60 | 22 | 19 | 28 | $3,376 | |
| 68 | Mercedes-Benz | 2021 AMG C43 4matic Convertible | 22 | 19 | 27 | $3,421 | |
| 69 | Infiniti | 2021 Q60 Red Sport | 22 | 20 | 27 | $3,312 | |
| 70 | Infiniti | 2021 Q60 Red Sport AWD | 21 | 19 | 26 | $3,469 | |
| 71 | Mercedes-Benz | 2021 S560 Convertible | 20 | 16 | 26 | $3,876 | |
| 72 | BMW | 2021 M2 Competition Coupe | 20 | 18 | 24 | $3,697 | |
| 73 | Mercedes-Benz | 2021 AMG C63 S Convertible | 20 | 17 | 25 | $3,776 | |
| 74 | Audi | 2021 RS 5 | 20 | 18 | 25 | $3,641 | |
| 75 | Mercedes-Benz | 2021 AMG C63 Convertible | 20 | 17 | 25 | $3,776 | |
| 76 | Mercedes-Benz | 2021 AMG C63 S Coupe | 20 | 17 | 26 | $3,724 | |
| 77 | Mercedes-Benz | 2021 AMG C63 Coupe | 20 | 17 | 26 | $3,724 | |
| 78 | BMW | 2021 M850i xDrive Coupe | 20 | 17 | 25 | $3,776 | |
| 79 | Lexus | 2021 LC 500 | 19 | 16 | 25 | $3,928 | |
| 80 | BMW | 2021 M4 Coupe | 19 | 16 | 23 | $4,045 | |
| 81 | BMW | 2021 M4 Competition Coupe | 19 | 16 | 23 | $4,045 | |
| 82 | Ferrari | 2021 Roma | 19 | 17 | 22 | $3,960 | |
| 83 | Lexus | 2021 RC F | 19 | 16 | 24 | $3,984 | |
| 84 | BMW | 2021 M850i xDrive Convertible | 19 | 17 | 24 | $3,832 | |
| 85 | Bentley | 2021 Continental GT | 19 | 16 | 26 | $3,876 | |
| 86 | Ford | 2021 Mustang Mach 1 | 18 | 15 | 23 | $4,217 | |
| 87 | Nissan | 2021 GT-R | 18 | 16 | 22 | $4,112 | |
| 88 | Mercedes-Benz | 2021 AMG S63 4matic Plus Convertible | 17 | 14 | 24 | $4,352 | |
| 89 | BMW | 2021 M8 Convertible | 17 | 15 | 21 | $4,357 | |
| 90 | BMW | 2021 M8 Competition Convertible | 17 | 15 | 21 | $4,357 | |
| 91 | Roush Performance | 2021 Mustang | 15 | 12 | 19 | $5,213 | |
| 92 | Ford | 2021 Shelby GT500 Mustang | 14 | 12 | 18 | $5,312 | |
Back to most fuel efficient Subcompact Cars of all model years.