22 MPG combined is an acceptable figure for the 2019 Ram 1500 Classic 4WD with the 3.0L EcoDiesel. This isn’t a compact crossover; it’s a full-size, body-on-frame truck designed to haul, tow, and handle tough jobs. For buyers who need a truck but appreciate the somewhat reasonable running costs, the EcoDiesel provides a good compromise. Often, these are owners who split time between job sites and family duties, needing the capability but wanting to avoid the worst-case fuel consumption of larger gasoline engines. It’s a smart configuration for a specific type of truck user.

City and highway performance

The EPA estimates for the Ram 1500 Classic 4WD EcoDiesel break down to 19 MPG in the city and 27 MPG on the highway. The city figure reflects the stop-and-go driving that hurts fuel economy. The EcoDiesel’s torque helps here, allowing for relaxed acceleration, but the truck’s weight still requires energy to get moving repeatedly.

The 27 MPG highway rating is where the diesel performs best. At constant speeds, the engine operates efficiently, using its long gearing and inherent diesel characteristics to deliver respectable mileage for a full-size truck. The eight-speed automatic transmission is a key contributor, ensuring the engine is always in its optimal power band.

Annual fuel cost

The EPA calculates an annual fuel cost of $2,550 for the 2019 Ram 1500 Classic 4WD EcoDiesel. This figure is based on driving 15,000 miles per year and using national average fuel prices. Remember that this is just an estimate; your actual fuel costs will vary depending on your driving habits, the type of driving you do, and the price of fuel in your area. Hard acceleration, frequent towing, or sustained idling will increase that number, while a predominantly highway commute at moderate speeds could lower it. Keep in mind the average cost of diesel, which is often higher than gasoline. To see all Ram fuel economy data, visit our brand page.

Real-world expectations

While the EPA figures provide a baseline, real-world fuel economy often differs. Owners are reporting numbers close to the EPA estimates, particularly on long highway trips. However, those who primarily drive in the city or frequently tow heavy loads will likely see lower numbers, potentially dipping into the mid-teens.

The type of tires fitted to the truck, the use of four-wheel drive, and even the weather conditions can all impact fuel consumption. It’s important to consider these factors when evaluating the fuel economy of the Ram 1500 Classic 4WD EcoDiesel and deciding if it meets your needs. Check out 1500 MPG across all years.

How it compares

Compared to other full-size trucks, the 2019 Ram 1500 Classic 4WD EcoDiesel offers generally competitive fuel economy. A similarly equipped Chevrolet Silverado or GMC Sierra with a gasoline V8 will struggle to match the diesel’s highway numbers, typically landing in the low 20s on the highway. Ford’s F-150 with the 2.7L EcoBoost gasoline engine can get close, but the real-world numbers are heavily dependent on driving style. In the past, Nissan offered a diesel in the Titan XD, but its performance and fuel economy were considered far less appealing with combined MPG around 17, and it was discontinued. The Ram’s EcoDiesel engine appeals to buyers who want better fuel economy without sacrificing too much capability. This difference in fuel economy could be a major deciding factor for buyers who regularly drive long distances or live in areas with high fuel prices.

Tips to maximize efficiency

Minimize idling. The EcoDiesel engine consumes fuel even when stationary, so avoid letting the truck idle unnecessarily, especially in cold weather. The engine warms up relatively quickly under load, so it’s best to start driving gently rather than letting it sit and idle.

Drive smoothly. Avoid aggressive acceleration and hard braking. The EcoDiesel’s torque allows for relaxed driving, so take advantage of it and maintain a steady speed. Anticipate traffic conditions and coast whenever possible to conserve momentum and minimize fuel consumption.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and ensure it matches the recommended pressure listed on the door jamb sticker. Also know that the aggressive mud terrain tires that are common on trucks can cost you a few MPG, so choose wisely.

Reduce weight. Avoid carrying unnecessary cargo in the bed of the truck. Extra weight reduces fuel economy, so remove anything that isn’t needed. The aerodynamic drag from items in the bed can also increase fuel consumption, especially at highway speeds.

Keep up with maintenance. Regular maintenance, including oil changes and air filter replacements, ensures that the engine is running efficiently. A properly maintained engine will deliver better fuel economy than one that is neglected.