2021 Bentley Bentayga 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 Bentley Bentayga.
The 2021 Bentley Bentayga has 3 model options: Automatic (S8) 8-cyl, 4.0 L, Automatic (S8) 12-cyl, 6.0 L and Automatic (S8) 6-cyl, 3.0 L.
The 2021 Bentley Bentayga Automatic (S8) 8-cyl, 4.0 L runs on premium gasoline and is in the Standard Sport Utility Vehicle 4WD car class.
The 2021 Bentley Bentayga Automatic (S8) 12-cyl, 6.0 L runs on premium gasoline and is in the Standard Sport Utility Vehicle 4WD car class.
The 2021 Bentley Bentayga Automatic (S8) 6-cyl, 3.0 L has a 100 kW AC Induction electric motor which is charged via standard charger.
All MPG estimates are "MPG equivalent". This is a conversion of electric energy consumption to a gasoline equivalent.
🛣 How Many Miles per Gallon (MPG) Does a 2021 Bentley Bentayga Get?
Across all models, the combined average MPG for the 2021 Bentley Bentayga is 17 miles per gallon.
The table below breaks down the MPG for each model option:
| Model Option | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|
| Automatic (S8) 8-cyl, 4.0 L | 18 | 15 | 24 |
| Automatic (S8) 12-cyl, 6.0 L | 14 | 12 | 18 |
| Automatic (S8) 6-cyl, 3.0 L | 19 | 17 | 21 |
💵 What is the Average Yearly Fuel Cost for a 2021 Bentley Bentayga?
The average fuel costs for all models of the 2021 Bentley Bentayga is $4,433.
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 Bentley Bentayga to an average vehicle over 5 years, you will spend $8,833 more 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 (S8) 8-cyl, 4.0 L | $4,100 | spend $9,000 more |
| Automatic (S8) 12-cyl, 6.0 L | $5,300 | spend $15,000 more |
| Automatic (S8) 6-cyl, 3.0 L | $3,900 | spend $2,500 more |
🛢 How Many Barrels of Petroleum Does a 2021 Bentley Bentayga Consume?
Across all models, the average number barrels of petroleum that the 2021 Bentley Bentayga will consume in one year is 16 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 (S8) 8-cyl, 4.0 L | 17 |
| Automatic (S8) 12-cyl, 6.0 L | 21 |
| Automatic (S8) 6-cyl, 3.0 L | 9 |
💨 How Many Grams of CO2 Does a 2021 Bentley Bentayga Emit?
The 2021 Bentley Bentayga will emit an average of about 6,845,000 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 233 trees would be needed to offset emissions from the 2021 Bentley Bentayga.
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 3 2021 Bentley Bentayga model options.
Automatic (S8) 8-cyl, 4.0 L
The table below contains all of the details we have for the 2021 Bentley Bentayga Automatic (S8) 8-cyl, 4.0 L:
| City MPG | 15 |
|---|---|
| Highway MPG | 24 |
| Combined MPG | 18 |
| Save/Spend vs Average Car | Spend $9,000 |
| Fuel Cost | $4,100 |
| Fuel Type 1 | Premium |
| Barrels of Petroleum | 17 |
| Grams of CO2 | 7,455,000 |
| Trees Needed to Offset | 355 |
| Drive | All-Wheel Drive |
| Cylinders | 8 |
| Displacement | 4 |
| Transmission | Automatic (S8) |
| Vehicle Class | Standard Sport Utility Vehicle 4WD |
| Start/Stop? | Yes |
| Supercharged? | No |
| Turbocharged? | Yes |
Automatic (S8) 12-cyl, 6.0 L
The table below contains all of the details we have for the 2021 Bentley Bentayga Automatic (S8) 12-cyl, 6.0 L:
| City MPG | 12 |
|---|---|
| Highway MPG | 18 |
| Combined MPG | 14 |
| Save/Spend vs Average Car | Spend $15,000 |
| Fuel Cost | $5,300 |
| Fuel Type 1 | Premium |
| Barrels of Petroleum | 21 |
| Grams of CO2 | 9,240,000 |
| Trees Needed to Offset | 440 |
| Drive | All-Wheel Drive |
| Cylinders | 12 |
| Displacement | 6 |
| Transmission | Automatic (S8) |
| Vehicle Class | Standard Sport Utility Vehicle 4WD |
| Start/Stop? | Yes |
| Supercharged? | No |
| Turbocharged? | Yes |
Automatic (S8) 6-cyl, 3.0 L
The table below contains all of the details we have for the 2021 Bentley Bentayga Automatic (S8) 6-cyl, 3.0 L:
| City MPG | 17 |
|---|---|
| Highway MPG | 21 |
| Combined MPG | 19 |
| Save/Spend vs Average Car | Spend $2,500 |
| Fuel Cost | $3,900 |
| Fuel Type 1 | Premium and Electricity |
| Fuel Type 2 | Electricity |
| Electric Motor | 100 kW AC Induction |
| ATV Type | Plug-in Hybrid |
| Barrels of Petroleum | 9 |
| Grams of CO2 | 3,840,000 |
| Trees Needed to Offset | 183 |
| Drive | All-Wheel Drive |
| Cylinders | 6 |
| Displacement | 3 |
| Transmission | Automatic (S8) |
| Vehicle Class | Standard Sport Utility Vehicle 4WD |
| Start/Stop? | Yes |
| Supercharged? | No |
| Turbocharged? | Yes |
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/bentley/bentayga/2021">2021 Bentley Bentayga MPG and Fuel Economy</a>
"2021 Bentley Bentayga MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/bentley/bentayga/2021.
"2021 Bentley Bentayga MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/bentley/bentayga/2021. Accessed January 3, 2026.
2021 Bentley Bentayga MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/bentley/bentayga/2021.