2021 Honda Civic 4Dr MPG and Fuel Economy
On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2021 Honda Civic 4Dr.
The 2021 Honda Civic 4Dr has 4 model options: Automatic (AV-S7) 4-cyl, 1.5 L, Automatic (variable gear ratios) 4-cyl, 1.5 L, Automatic (AV-S7) 4-cyl, 2.0 L and Automatic (variable gear ratios) 4-cyl, 2.0 L.
The 2021 Honda Civic 4Dr Automatic (AV-S7) 4-cyl, 1.5 L runs on regular gasoline and is in the Midsize Cars car class.
The 2021 Honda Civic 4Dr Automatic (variable gear ratios) 4-cyl, 1.5 L runs on regular gasoline and is in the Midsize Cars car class.
The 2021 Honda Civic 4Dr Automatic (AV-S7) 4-cyl, 2.0 L runs on regular gasoline and is in the Midsize Cars car class.
The 2021 Honda Civic 4Dr Automatic (variable gear ratios) 4-cyl, 2.0 L runs on regular gasoline and is in the Midsize Cars car class.
🛣 How Many Miles per Gallon (MPG) Does a 2021 Honda Civic 4Dr Get?
Across all models, the combined average MPG for the 2021 Honda Civic 4Dr is 34 miles per gallon.
The table below breaks down the MPG for each model option:
| Model Option | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|
| Automatic (AV-S7) 4-cyl, 1.5 L | 33 | 30 | 38 |
| Automatic (variable gear ratios) 4-cyl, 1.5 L | 36 | 32 | 42 |
| Automatic (AV-S7) 4-cyl, 2.0 L | 32 | 29 | 37 |
| Automatic (variable gear ratios) 4-cyl, 2.0 L | 33 | 30 | 38 |
💵 What is the Average Yearly Fuel Cost for a 2021 Honda Civic 4Dr?
The average fuel costs for all models of the 2021 Honda Civic 4Dr is $1,875.
The average fuel costs have been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
Comparing a 2021 Honda Civic 4Dr to an average vehicle over 5 years, you will save $2,125 on fuel.
The table below shows the fuel costs and 5-year save/spend for each model option:
| Model Option | Fuel Cost | 5-Year Save/Spend |
|---|---|---|
| Automatic (AV-S7) 4-cyl, 1.5 L | $1,900 | save $2,000 |
| Automatic (variable gear ratios) 4-cyl, 1.5 L | $1,750 | save $2,750 |
| Automatic (AV-S7) 4-cyl, 2.0 L | $1,950 | save $1,750 |
| Automatic (variable gear ratios) 4-cyl, 2.0 L | $1,900 | save $2,000 |
🛢 How Many Barrels of Petroleum Does a 2021 Honda Civic 4Dr Consume?
Across all models, the average number barrels of petroleum that the 2021 Honda Civic 4Dr will consume in one year is 9 barrels.
The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.
| Model Option | Barrels |
|---|---|
| Automatic (AV-S7) 4-cyl, 1.5 L | 9 |
| Automatic (variable gear ratios) 4-cyl, 1.5 L | 8 |
| Automatic (AV-S7) 4-cyl, 2.0 L | 9 |
| Automatic (variable gear ratios) 4-cyl, 2.0 L | 9 |
💨 How Many Grams of CO2 Does a 2021 Honda Civic 4Dr Emit?
The 2021 Honda Civic 4Dr will emit an average of about 3,971,250 grams of CO2 per year.
🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 135 trees would be needed to offset emissions from the 2021 Honda Civic 4Dr.
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 4 2021 Honda Civic 4Dr model options.
Automatic (AV-S7) 4-cyl, 1.5 L
The table below contains all of the details we have for the 2021 Honda Civic 4Dr Automatic (AV-S7) 4-cyl, 1.5 L:
| City MPG | 30 |
|---|---|
| Highway MPG | 38 |
| Combined MPG | 33 |
| Save/Spend vs Average Car | Save $2,000 |
| Fuel Cost | $1,900 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 9 |
| Grams of CO2 | 3,990,000 |
| Trees Needed to Offset | 190 |
| Drive | Front-Wheel Drive |
| Cylinders | 4 |
| Displacement | 1.5 |
| Transmission | Automatic (AV-S7) |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | Yes |
Automatic (variable gear ratios) 4-cyl, 1.5 L
The table below contains all of the details we have for the 2021 Honda Civic 4Dr Automatic (variable gear ratios) 4-cyl, 1.5 L:
| City MPG | 32 |
|---|---|
| Highway MPG | 42 |
| Combined MPG | 36 |
| Save/Spend vs Average Car | Save $2,750 |
| Fuel Cost | $1,750 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 8 |
| Grams of CO2 | 3,720,000 |
| Trees Needed to Offset | 177 |
| Drive | Front-Wheel Drive |
| Cylinders | 4 |
| Displacement | 1.5 |
| Transmission | Automatic (variable gear ratios) |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | Yes |
Automatic (AV-S7) 4-cyl, 2.0 L
The table below contains all of the details we have for the 2021 Honda Civic 4Dr Automatic (AV-S7) 4-cyl, 2.0 L:
| City MPG | 29 |
|---|---|
| Highway MPG | 37 |
| Combined MPG | 32 |
| Save/Spend vs Average Car | Save $1,750 |
| Fuel Cost | $1,950 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 9 |
| Grams of CO2 | 4,155,000 |
| Trees Needed to Offset | 198 |
| Drive | Front-Wheel Drive |
| Cylinders | 4 |
| Displacement | 2 |
| Transmission | Automatic (AV-S7) |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic (variable gear ratios) 4-cyl, 2.0 L
The table below contains all of the details we have for the 2021 Honda Civic 4Dr Automatic (variable gear ratios) 4-cyl, 2.0 L:
| City MPG | 30 |
|---|---|
| Highway MPG | 38 |
| Combined MPG | 33 |
| Save/Spend vs Average Car | Save $2,000 |
| Fuel Cost | $1,900 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 9 |
| Grams of CO2 | 4,020,000 |
| Trees Needed to Offset | 191 |
| Drive | Front-Wheel Drive |
| Cylinders | 4 |
| Displacement | 2 |
| Transmission | Automatic (variable gear ratios) |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/honda/civic-4dr/2021">2021 Honda Civic 4Dr MPG and Fuel Economy</a>
"2021 Honda Civic 4Dr MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/honda/civic-4dr/2021.
"2021 Honda Civic 4Dr MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/honda/civic-4dr/2021. Accessed January 3, 2026.
2021 Honda Civic 4Dr MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/honda/civic-4dr/2021.