2003 Mercury Mountaineer 4WD MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2003 Mercury Mountaineer 4WD.

The 2003 Mercury Mountaineer 4WD runs on regular gasoline and is in the Sport Utility Vehicle - 4WD car class.

Whether you are considering a purchase of the car, or just wanting to find out how economical and environmentally friendly (or un-friendly) your 2003 Mercury Mountaineer 4WD is, we have the information you need.

🛣 How Many Miles per Gallon (MPG) Does a 2003 Mercury Mountaineer 4WD Get?

First off, the most commonly asked question. A 2003 Mercury Mountaineer 4WD gets up to 13 miles per gallon in the city, and 18 miles per gallon on the highway.

The combined average MPG for the 2003 Mercury Mountaineer 4WD is 15 miles per gallon.

💵 What is the Average Yearly Fuel Cost for a 2003 Mercury Mountaineer 4WD?

The estimated fuel costs for the 2003 Mercury Mountaineer 4WD is $4,150 per year.

That value has 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.

If you were to compare a 2003 Mercury Mountaineer 4WD to an average vehicle over 5 years, you will spend $9,250 more on fuel.

🛢 How Many Barrels of Petroleum Does a 2003 Mercury Mountaineer 4WD Consume?

The 2003 Mercury Mountaineer 4WD will consume roughly 20 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.

The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.

Overview

The table below covers all of the miles per gallon, engine specifications, and emission details we have for the 2003 Mercury Mountaineer 4WD.

City MPG13
Highway MPG18
Combined MPG15
Save/Spend vs Average CarSpend $9,250
Fuel Cost$4,150
Fuel Type 1Regular
Barrels of Petroleum20
Drive4-Wheel or All-Wheel Drive
Cylinders8
Displacement4.6
TransmissionAutomatic 5-spd
Vehicle ClassSport Utility Vehicle - 4WD
Start/Stop?No
Supercharged?No
Turbocharged?No

Related Mercury Models from 2003

If you're interested in other Mercury models from 2003, you can find them in the table below. You can click the model link to find miles per gallon and emission information for that model.

Link To or Reference This Page

If you use this page in your research, please reference MPG Buddy as the source.

  • "2003 Mercury Mountaineer 4WD MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/mercury/mountaineer-4wd/2003.

  • "2003 Mercury Mountaineer 4WD MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/mercury/mountaineer-4wd/2003. Accessed January 3, 2026.

  • 2003 Mercury Mountaineer 4WD MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/mercury/mountaineer-4wd/2003.