Is a 5.7 Hemi good on gas?
The short answer is no, a 5.7 Hemi engine is generally not considered good on gas. The 5.7 Hemi is a powerful V8 engine found in many Dodge and Chrysler vehicles, known for its performance, but it also has a reputation for relatively poor fuel efficiency compared to smaller, more economical engines.
Understanding the 5.7 Hemi Engine
The 5.7 Hemi is a large, high-displacement engine that prioritizes power and performance over fuel economy. It is a member of Chrysler's "Hemi" engine family, named for its hemispherical combustion chambers, which allow for more efficient burning of the air-fuel mixture. While this design contributes to the engine's impressive power output, it also results in higher fuel consumption.
Vehicles equipped with the 5.7 Hemi engine typically achieve fuel economy ratings in the range of 15-20 miles per gallon (mpg) in combined city and highway driving, depending on the specific vehicle model and driving conditions. This is significantly lower than the fuel efficiency of smaller, more economical engines found in many other vehicles.
Factors Affecting Fuel Economy
Several factors contribute to the relatively poor fuel economy of the 5.7 Hemi engine:
- Displacement: The large 5.7-liter displacement of the Hemi engine requires more fuel to operate, compared to smaller engines.
- Power and Performance: The Hemi engine is designed for high performance, with a focus on power output rather than fuel efficiency.
- Vehicle Weight: Many vehicles equipped with the 5.7 Hemi, such as large trucks and SUVs, are also relatively heavy, further contributing to their lower fuel economy.
- Driving Habits: The powerful nature of the Hemi engine may encourage more aggressive driving, which can significantly reduce fuel efficiency.
It's important to note that while the 5.7 Hemi is not considered a fuel-efficient engine, there are ways to improve its gas mileage, such as driving conservatively, maintaining the vehicle properly, and considering alternative engine options for better fuel economy.
Does the 5.7 Hemi get good gas mileage?
5.7 Hemi 4x4 crew cab non-eTorque and I get an overall average of 16.7 mpg, 20ish going 75 on the highway.
Does premium gas get better mileage?
No, any fuel efficiency gained using premium fuel would stem from engine performance, not the gas itself. Buying premium gas won't have you visiting a gas station any less frequently, especially with a standard engine not designed to take advantage of premium gas.
Do Hemi engines use more gas?
However, EPA estimates indicate the HEMI engines haven't done all too badly in terms of fuel efficiency. For instance, a 2024 RAM 1500 with rear-wheel drive and the 5.7-liter HEMI engine returns an EPA-estimated 18 mpg in the city, 23 mpg on the highway, and 20 mpg combined.
Does a 5.7 Hemi need premium gas?
Dodge Charger R/T
Turns out it's also for owners of Fiat Chrysler's Hemi 5.7-liter V-8, as the company recommends 89-octane fuel for this engine.
How many miles will a 5.7 Hemi last?
Hemis are awesome engines... You could easily have another 150k miles if it was well maintained. Even after that a rebuild will not be too costly and you good for another possible decade+ of usage.
Why is the 5.7 HEMI so good?
The Hemi engine's design can provide more power compared to a conventional engine because it allows higher compression ratios and facilitates better air-fuel mixtures inside the cylinder. This allows the engine to ignite all the fuel inside the cylinder, resulting in more heat and more energy.
What years to avoid for the 5.7 HEMI Ram 1500?
Q: What are the Dodge RAM 1500 years to avoid? A: The Dodge RAM 1500 years to avoid are 2003, 2010-2013 (specifically models with the 5.7-liter V8 engine), 2014, 2015, and 2016. These model years have had various problems and recalls related to the engine, transmission, suspension, and electrical systems.
How to improve 5.7 HEMI gas mileage?
The easiest way to do this is by driving at a moderate pace, but adjusting your vehicle can also help. For instance, a roof rack or an uncovered bed can increase the aerodynamic drag. Removing such accessories and getting a bed cover can significantly affect your fuel efficiency.
How much horsepower does a 5.7 Hemi have?
395 horsepower
The 5.7 Hemi is known for its impressive power and torque output, and for the 2021 model year, it has an output of up to 395 horsepower and 410 lb-ft of torque.
Is the 5.7 HEMI a strong engine?
The 5.7 Hemi is a popular V8 engine that is used in many vehicles manufactured by Dodge and Chrysler. The 5.7 Hemi is known for its impressive power and torque output, and for the 2021 model year, it has an output of up to 395 horsepower and 410 lb-ft of torque.
