2014 Mercedes-Benz GLK350 MPG and Fuel Economy
On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2014 Mercedes-Benz GLK350.
The 2014 Mercedes-Benz GLK350 has 2 model options: Automatic 7-spd 6-cyl, 3.5 L and Automatic 7-spd 6-cyl, 3.5 L.
The 2014 Mercedes-Benz GLK350 Automatic 7-spd 6-cyl, 3.5 L runs on premium gasoline and is in the Small Sport Utility Vehicle 2WD car class.
The 2014 Mercedes-Benz GLK350 Automatic 7-spd 6-cyl, 3.5 L runs on premium gasoline and is in the Small Sport Utility Vehicle 2WD car class.
🛣 How Many Miles per Gallon (MPG) Does a 2014 Mercedes-Benz GLK350 Get?
Across all models, the combined average MPG for the 2014 Mercedes-Benz GLK350 is 22 miles per gallon.
The table below breaks down the MPG for each model option:
| Model Option | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|
| Automatic 7-spd 6-cyl, 3.5 L | 22 | 19 | 26 |
| Automatic 7-spd 6-cyl, 3.5 L | 21 | 19 | 25 |
💵 What is the Average Yearly Fuel Cost for a 2014 Mercedes-Benz GLK350?
The average fuel costs for all models of the 2014 Mercedes-Benz GLK350 is $3,425.
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 2014 Mercedes-Benz GLK350 to an average vehicle over 5 years, you will spend $5,625 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 7-spd 6-cyl, 3.5 L | $3,350 | spend $5,250 more |
| Automatic 7-spd 6-cyl, 3.5 L | $3,500 | spend $6,000 more |
🛢 How Many Barrels of Petroleum Does a 2014 Mercedes-Benz GLK350 Consume?
Across all models, the average number barrels of petroleum that the 2014 Mercedes-Benz GLK350 will consume in one year is 14 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 7-spd 6-cyl, 3.5 L | 14 |
| Automatic 7-spd 6-cyl, 3.5 L | 14 |
💨 How Many Grams of CO2 Does a 2014 Mercedes-Benz GLK350 Emit?
The 2014 Mercedes-Benz GLK350 will emit an average of about 6,247,500 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 213 trees would be needed to offset emissions from the 2014 Mercedes-Benz GLK350.
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 2 2014 Mercedes-Benz GLK350 model options.
Automatic 7-spd 6-cyl, 3.5 L
The table below contains all of the details we have for the 2014 Mercedes-Benz GLK350 Automatic 7-spd 6-cyl, 3.5 L:
| City MPG | 19 |
|---|---|
| Highway MPG | 26 |
| Combined MPG | 22 |
| Save/Spend vs Average Car | Spend $5,250 |
| Fuel Cost | $3,350 |
| Fuel Type 1 | Premium |
| Barrels of Petroleum | 14 |
| Grams of CO2 | 6,195,000 |
| Trees Needed to Offset | 295 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 3.5 |
| Transmission | Automatic 7-spd |
| Vehicle Class | Small Sport Utility Vehicle 2WD |
| Start/Stop? | Yes |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 7-spd 6-cyl, 3.5 L
The table below contains all of the details we have for the 2014 Mercedes-Benz GLK350 Automatic 7-spd 6-cyl, 3.5 L:
| City MPG | 19 |
|---|---|
| Highway MPG | 25 |
| Combined MPG | 21 |
| Save/Spend vs Average Car | Spend $6,000 |
| Fuel Cost | $3,500 |
| Fuel Type 1 | Premium |
| Barrels of Petroleum | 14 |
| Grams of CO2 | 6,300,000 |
| Trees Needed to Offset | 300 |
| Drive | Rear-Wheel Drive |
| Cylinders | 6 |
| Displacement | 3.5 |
| Transmission | Automatic 7-spd |
| Vehicle Class | Small Sport Utility Vehicle 2WD |
| Start/Stop? | Yes |
| 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/mercedes-benz/glk350/2014">2014 Mercedes-Benz GLK350 MPG and Fuel Economy</a>
"2014 Mercedes-Benz GLK350 MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/mercedes-benz/glk350/2014.
"2014 Mercedes-Benz GLK350 MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/mercedes-benz/glk350/2014. Accessed January 3, 2026.
2014 Mercedes-Benz GLK350 MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/mercedes-benz/glk350/2014.