2026 Ram 3500 Limited Longhorn

Truck · 6.7L High-Output Cummins I6 Turbodiesel · 4WD

84/100

AutoVault's overall score, weighted for what a truck is actually for — performance, technology, comfort, reliability, safety and value.

Specifications

Engine	6.7L High-Output Cummins I6 Turbodiesel
Horsepower	430 hp
Torque	1075 lb-ft
0–60 mph	7.8 sec
Top speed	100 mph
Drivetrain	4WD
Seats	5
Combined MPG	11 mpg (9 city / 14 hwy)
Range	200 miles
MSRP	$75,250
Body style	Truck

The verdict

What's good

Cummins diesel delivers best-in-class pulling capability for fifth-wheel trailers
Longhorn cabin uses genuine wood and hand-stitched leather rivaling luxury sedans
50-gallon tank lets you tow across states with minimal fuel stops
Air ride rear suspension self-levels under load automatically

What's not

Dually rear track width clips curbs in standard parking lanes
Firm unloaded highway ride transmits road texture into the cabin
DEF fluid top-ups add routine maintenance step diesel newcomers miss
Long hood and tall beltline create sizable blind spots when maneuvering

The engine

Cummins

6.7L Turbodiesel I6

A tireless, low-revving diesel straight-six that delivers a wall of torque from just off idle, prized for effortless heavy towing and a deep, signature clatter under load.

Designed and built by Cummins in Columbus, Indiana, descended from the legendary 5.9-liter Cummins that turned the Dodge Ram into a diesel icon starting in 1989.

The High-Output version's torque has climbed past 1,000 lb-ft, among the highest figures ever offered in a production pickup.
The lineage traces directly from the original 5.9-liter, 160-horsepower engine through decades of continuous evolution to today's 6.7.
Its inline-six layout is inherently well-balanced, a key reason it has endured where some rivals moved to V8 diesels.

See the rest in AutoVault

The six sub-scores behind the 84 — performance, tech, comfort, reliability, safety and value
Market value today and year-by-year value history
Studio photography — exterior, rear and interior
Side-by-side comparison with up to four cars

Open in AutoVault