12 MPG combined. Let’s be brutally honest: nobody buys the 2021 Ram 1500 TRX thinking about fuel economy. This isn’t your sensible commuter truck; it’s a fire-breathing, desert-conquering machine powered by a supercharged 6.2L HEMI V8. The TRX exists to obliterate anything in its path while delivering a visceral driving experience. Fuel efficiency is simply not part of the equation for those who crave this level of performance and capability.

City and highway performance

The EPA estimates the TRX will achieve 10 MPG in the city and 14 MPG on the highway. These figures are deeply affected by driving style. Spend any time exploring the upper ranges of the tachometer, and you can expect significantly lower real-world numbers. The TRX’s aggressive tires and suspension contribute to increased rolling resistance, further impacting efficiency, especially around town. Highway mileage is somewhat better, but maintaining a steady speed is key; frequent acceleration will drastically reduce your MPG. Understanding the TRX’s intended use is crucial to interpreting these numbers. It’s not designed for stop-and-go traffic or long-distance cruising at a constant 65 MPH.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Ram 1500 TRX at $4,800. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind this is just an estimate, and if you live in an area with higher gasoline prices or drive more aggressively (which is highly likely given the TRX’s character), you can expect your actual fuel expenses to be even higher. Think of that $4,800 as a realistic baseline, not a ceiling. That sum could cover a decent vacation or a significant home repair. The EPA also assumes the use of regular gasoline, and there is really no benefit in using a higher grade fuel. It is important to check if there are any additives that are required for the vehicle, but generally, the use of gasoline that is higher than what is recommended provides no benefit. Those considering purchasing the 2021 Ram 1500 TRX can compare this with all Ram fuel economy data.

Real-world expectations

While the EPA provides official estimates, real-world MPG for the TRX often falls short, especially for owners who embrace the truck’s performance capabilities. Expect to see single-digit MPGs fairly frequently if you enjoy the acceleration and power that the supercharged V8 delivers, and it is especially true if you do off-roading. This isn’t a truck for hypermiling. Your driving habits and local terrain will play a significant role in determining your actual fuel consumption. Owners who primarily use the TRX for off-roading or towing heavy loads will likely experience the lower end of the MPG range. The 2021 Ram 1500 TRX is designed to dominate across its lineup; you can see the 1500 MPG across all years.

How it compares

Compared to other high-performance trucks, the TRX’s fuel economy is predictably low. The Ford F-150 Raptor, for example, with its turbocharged V6 engine, achieves a combined 15 MPG. Looking at other full-size trucks with powerful V8 engines, you’ll generally find slightly better fuel economy, often achieving around 16-18 MPG combined; however, these trucks lack the TRX’s extreme off-road capabilities and supercharged performance. Direct fuel economy comparisons are almost irrelevant for TRX buyers, because they’re not cross-shopping with fuel-sipping alternatives. The TRX’s competitive set is more focused on performance metrics like horsepower, torque, and off-road prowess, areas where it truly shines.

Tips to maximize efficiency

While fuel economy isn’t the TRX’s strong suit, there are actions you can take to minimize consumption. Resist the urge to constantly floor the accelerator. The supercharger is a significant contributor to fuel inefficiency, and gentle acceleration will make a difference.

Keep your tires properly inflated. The TRX’s large, aggressive tires have high rolling resistance, but maintaining the correct pressure will help reduce it.

Avoid unnecessary idling. Idling consumes fuel without moving the vehicle, so turn off the engine if you’re stopped for more than a minute or two.

Plan your trips efficiently. Combining errands into a single trip can reduce the number of cold starts, which are particularly fuel-intensive.

Consider the weight you’re carrying. Hauling unnecessary weight reduces fuel efficiency. Remove any items from the bed or cab that you don’t need.