3.0 EcoDiesel vs 3.6 Pentastar Ram 1500 Comparison

2020 Ram 1500 EcoDiesel

3.0L EcoDiesel V-6

Introduced with an EPA rated maximum 28 mpg, FCA has since bumped the EcoDiesel's maximum mpg to 29 on the highway with the addition of the "HFE" variant. At only 3 liters of displacement, the EcoDiesel produces reasonable power and torque considering its size handicap. Like the majority of diesels, the engine utilizes a relatively small bore and lengthy stroke to favor big torque at low engine speeds.

The EcoDiesel is smaller, more powerful, and more capable than the larger Pentastar V-6 available in the Ram 1500. Like the Pentastar, the EcoDiesel relies on an 8 speed automatic transmission in order to maximize efficiency in all driving conditions. Behind fuel economy, the EcoDiesel's most impressive feature is its 9,210 pound maximum trailer tow rating. As is common from heavier vehicles, the EcoDiesel comes in second to the Pentastar equipped pickup's 1,890 pounds available payload rating. Although priced higher, the EcoDiesel comes standard with a 5 year, 100,000 mile from FCA.

Manufacturer VM Motori
Displacement 182 cid, 3.0 liters
Configuration 60° V-6
Transmission 8 speed automatic
Bore x Stroke 3.27" x 3.60"
Block/Heads Compact graphite iron (CGI) engine block, aluminum cylinder heads
Compression Ratio 16.5 : 1
Injection High pressure common rail, direct injection
Turbocharger Water cooled VGT, air-to-air intercooler
Horsepower 240 hp @ 3,600 rpm
Torque 420 lb-ft @ 2,000 rpm
Emissions EGR, DPF, DOC, SCR (requires the use of DEF)
Fuel Economy* 4x2 Models: 21 city, 29 highway mpg
4x4 Models: 20 city, 28 highway mpg
Max GVWR 6,950 lbs
Max GCWR 14,7500 lbs
Max Payload 1,600 lbs
Max Trailer Tow 9,210 lbs
Curb Weight 5,095 - 5,688 lbs
Warranty 5 year/100,000 miles
2020 Ram 1500 Pentastar

3.6L Pentastar V-6

Chrysler's Pentastar had been the fuel miser of the pickup segment - until the EcoDiesel came along. Rated as high as 17 mpg in the city and 25 mpg on the highway, the 3.6L V-6 has always offered impressive fuel economy in the fullsize pickup category. At over 7,500 lbs, the max tow rating of the Pentastar equipped Ram 1500 is plenty for casual pickup owners.

The latest versions of the Pentastar equipped Ram 1500 utilize an 8 speed automatic transmission, though with a lighter capacity than that found behind the EcoDiesel. The engine's relatively large bore, short stroke, and high compression ratio all contribute to its efficiency. With the introduction of the EcoDiesel, however, is there still room for the gas burning V-6? Not everyone is willing and able to shell out big dollars for the diesel upgrade, and seeing as the Pentastar's ratings are enough for the average individual the engine continues to sell in lieu of the more powerful, more efficient, more capable EcoDiesel's availability.

Manufacturer FCA
Displacement 220 cid, 3.6 liters
Configuration 60° V-6
Transmission 8 speed automatic
Bore x Stroke 3.78" x 3.27"
Block/Heads Aluminum engine block, aluminum cylinder heads
Compression Ratio 10.2 : 1
Aspiration Naturally aspirated
Injection Sequential multi-port fuel injection
Valvetrain DOHC, 4v per cylinder, variable valve timing (VVT)
Horsepower 305 hp @ 6,400 rpm
Torque 269 lb-ft @ 4,175 rpm
Fuel Economy 4x2 Models: 17 city, 25 highway mpg
4x4 Models: 16 city, 23 highway mpg
Max GVWR 6,800 lbs
Max GCWR 12,900 lbs
Max Payload 1,890 lbs
Max Trailer Tow 7,610 lbs
Curb Weight 4,524 - 5,164 lbs
Warranty 5 year/60,000 miles