2021 RAM 2500 Diesel Mega Cab

MSRP $56,275 - $63,435

Ranked #18 in Fullsize Pickup-trucks

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6.3

Overall Rating

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2021 RAM 2500 diesel Mega Cab Price, Review, Ratings and Pictures

Updated on: October 30, 2020

C. Khandelwal's image
C. Khandelwal

Automotive Journalist


With a major segment carried forward by renowned automakers, RAM has been stupendous with its RAM 2500 Mega Cab that calls for a series of modulations and tweaks with its upcoming version. The 2021 RAM 2500 is offered in three distinct trims and the range starts from $46,850 for the Bighorn and goes all the way to $61,150 for the Laramie Longhorn trim.

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Pros

Amazing torque

Greeting towing capacity

Variety of options

Cons

Rivals have better transmissions 

Power Wagon option not available in diesel

What's New?

No significant change


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Features

vehicle bio

base price

$56275

bodystyle

4dr Mega Cab

engine type

displacement

392 cu.in.

horsepower

410 hp @ 5600 rpm

torque

429 lb.-ft. @ 4000

dimensions

wheelbase

146 in.

length

237.4 in.

width

79.5 in.

height

76.9 in.

curb weight

6081 lbs.

ground clearance

6.1 in.

warranty

roadside assistance

No


Pictures & Videos

Videos
2021 RAM 2500 diesel Mega Cab Review video
2021 RAM 2500 diesel Mega Cab Review video

Trims

Big Horn $56,275 onwards

410 hp @ 5600 rpm | 6.7 L | Turbo Diesel V6 | regular unleaded

  • 4-way Power Adjustable Front-Passenger's Seat
  • All door remote Keyless Entry
  • Black Outside Mirrors
  • Chrome Headlamps Bezels
  • Cloth Seat Trim
  • Halogen Quad Headlamps
  • Variable Intermittent Windshield Wipers

Laramie Longhorn $61,150 onwards

410 hp @ 5600 rpm | 6.7 L | Turbo Diesel V6 | regular unleaded

  • Driver Lumbar Support
  • Heated Mirrors
  • Parking Assist
  • SiriusXM AM/FM/Satellite, Seek-Scan Radio

Laramie $63,435 onwards

410 hp @ 5600 rpm | 6.7 L | Turbo Diesel V6 | regular unleaded

  • 18" Polished Aluminum Wheels
  • 2 - 1st Row LCD Monitor
  • 8-Way power adjustable front passenger seat
  • Dual Zone Front Automatic Air Conditioning
  • Front Fog/Driving Lights
  • Front LED Fog Lamps
  • Power Folding Side Mirrors
  • Simulated Suede/leather Seat Trim

Colors and Styles

2021 RAM 2500 diesel Mega Cab in Billet Silver Metallic Clear Coat color 2021 RAM 2500 diesel Mega Cab in Bright White Clear Coat color 2021 RAM 2500 diesel Mega Cab in Pearl White color 2021 RAM 2500 diesel Mega Cab in Granite Crystal Metallic Clearcoat color 2021 RAM 2500 diesel Mega Cab in Patriot Blue Pearlcoat color
Billet Silver Metallic Clear Coat

Vehicle images are guides only and may not reflect the model's exact specifications/features– exact specifications/features should be confirmed with the seller.

Ratings

Pricing And Features

5.0

Engine And Performance

5.0

Fuel Economy

6.0

Interior

8.1

Exterior

5.0

Safety

5.0

Competition

9.1

6.3

OVERALL RATING

Expert Review, Pricing Analysis and Buying Guide

6.3

Overall Rating


The pickup segment is always at a boom with many competitors offering similar attributes. Thus, giving a fierce competition to the 2021 RAM 2500 Mega Cab is the Ford F-250 Super Duty XL, the Chevrolet Silverado 2500 HD, and the GMC Sierra 2500 HD Diesel that affirms to offer similar dimensions, design, and pulling-capacity.

So, here's our take on the 2021 RAM 2500 Mega Cab that's soon going on sale in the market.

2021 RAM 2500 diesel Mega Cab front view
2021 RAM 2500 diesel Mega Cab rear view

5.0/10
Pricing and Features

5.0/10
Engine and Performance

6.0/10
Fuel Economy

8.1/10
Interior

5.0/10
Exterior

5.0/10
Safety

9.1/10
Competition


2021 RAM 2500 diesel Mega Cab Pricing and Features

5.0/10

The 2021 RAM 2500 Mega Cab Diesel is offered in three trim configurations namely Bighorn, Laramie, and Laramie Longhorn. RAM equips all its Mega Cab trims with the latest features, extensive pulling capacity, and class-apart design dynamics that make it one of the best full-size pickup trucks in the segment. The 2021 RAM 2500 is priced at $46,850 for the Bighorn trim, $53,850 for the Laramie trim, and $61,150 for the Laramie Longhorn trim configuration.

Model

Bighorn

Laramie

Laramie Longhorn

MSRP(4WD)

$46,850

$53,850

$61,150

Key Features

Fog Lights

Laramie builds off the Big Horn/Lone Star and adds a standard 6.4-liter V8

Laramie Longhorn adds to the Laramie's substantial features list by including a chrome mesh grille

 

Chrome Grille Slats

More chrome trim (including the bumpers)

Color-keyed bumpers, running boards

 

Big Horn adds alloy wheels

Alloy wheels for dual-rear-wheel models

Spray-in bed liner, LED bed lights

 

115-volt power outlet

projector headlights, LED tail lights

Upgraded floor mats, upgraded leather upholstery

 

Power-adjustable driver's seat

Power-folding and auto-dimming mirrors

Remote ignition, a full center console

 

Premium cloth upholstery

Front and rear parking sensors

Front bucket seats

The Bighorn trim, priced at $46,850 comes with plenty of opulent features as standard with the highlights being Chrome grille slats and premium cloth upholstery. 

The Laramie trim,priced at $53,850 comes with all the features of the Bighorn trim configuration as standard with the highlights being projector headlights and auto-dimming mirrors.

The Laramie Longhorn trim,priced at $61,150 comes with all the features of the Laramie trim configuration as standard with the highlights being remote ignition, spray-on bed liner, and upgraded leather upholstery. 

2021 RAM 2500 diesel Mega Cab Maintenance, Reliability and Warranty

RAM is well known for making the most reliable pickup trucks in the segment. Quite similar is the 2021 RAM 2500 Mega Cab which is affirmed for its extensive pulling capacity, reliability, and extraordinary service compared to other competitors in the segment.

Reliability and Ownership Costs of the 2021 RAM 2500 Mega Cab

The RAM 2500 stands decently with its reliability. There are no recalls for the 2020 version of the cab that can hamper its reliability. However, the 2019 version has two recalls regarding faulty brakes and leaky fuel lines. 

The J.D. Reports are yet to evaluate the upcoming version of the cab, however, the series of warranty figures constitutes for positive reports in the segment. 

The 2021 RAM 2500 Mega cab goes beyond the generic class of automobiles and as other premium pickups, it has similar extensive measures regarding the repair and maintenance. It won't cost a lot for the buyers to maintain until the car is in warranty, but outside the safety net, the repairing cost can be much higher than other competitors in the segment.

Washington

$46,850

Florida

$46,850

California

$46,850

New Jersey

$46,850

Arizona

$46,850

Warranty

The Warranty configuration of the RAM 2500 Mega Cab is way above the generic premium pickups in the segment. The automakers are so confident and stern with their cabs that they provide three years or 36,000 miles basic warranty with their RAM 2500.

Criteria

Period

Limited warranty

3 years or 36,000 miles; whichever is earlier

Powertrain warranty

5 years or 60,00 miles; whichever is earlier

24-hour roadside assistance

5 years or 100,000 miles; whichever is earlier

RAM backs the RAM 2500 with a warranty that is pretty similar to all the competitors in the pickup segment.

Miles Per Dollar of the 2021 RAM 2500 

The miles per dollar cost for a car is the number of miles and the maintenance cost that is incurred during a similar time span.

The maintenance cost for the RAM 2500 Mega Cab is around $918 per year while the miles per dollar of the cab stands at 5.82 miles for a dollar as stipulated through an mpg rating of 14 in the combined cycle.

2021 RAM 2500 diesel Mega Cab Buying Advice

We will recommend the Laramie trim configuration from the RAM 2500 Mega Cab lineup. Apart from all the standard features, the Laramie comes in a middle range of all the trims and offers all the standard and premium features that are exclusive for a buy-in this segment.

The RAM 2500 Mega Cab outperforms on all the major parameters including vehement design aesthetics, handling, and pickup capacity. Thus, the Mega Cab gives us every reason to be considered as the right buying choice than all its competitors in the segment.

Is buying a used RAM 2500 Mega Cab a good idea?

The 2021 RAM 2500 Mega Cab accentuates all the capabilities of a premium pickup line. For the buyers who can invest around 50 grand, in buying a pickup, requires no reason to consider a used RAM 2500. 

Though it has an efficient warranty and similarly the resale value, still, buying a used RAM will not be a good idea for the buyers. Instead, we will recommend going for a brand new plush RAM 2500 Mega Cab, driven in pure confidence.

2021 RAM 2500 diesel Mega Cab Engine and Performance

5.0/10

The RAM 2500 is equipped with a massive 6.7L Cummins Inline 6 engine configuration that boosts out 370 horses of power and 850 lb-ft of torque. The engine meets all the standards of a performance-oriented cab and is potent enough to give an excellent pullback and a best-in-class pickup capacity. A 8-speed automatic transmission installed with the configuration then transfers the massive power of the pickup to the wheels.

Models

2021 RAM 2500 Mega Cab 

Ford F-250 Super Duty XL

Chevy Silverado 2500 HD WT

GMC Sierra 2500 HD Diesel Regular Cab

MSRP

$46,850

$63,500

$58,805

$49,310

Engine

6.7-liter Cummins I-6

6.7L Power Stroke V8 Diesel Engine

6.6L V8 Turbo Diesel

6.6L V8 Turbo Diesel

Transmission

8-Speed Automatic

10-Speed Automatic

10-Speed Automatic

10-Speed Automatic

Power 

370 hp 

475 hp

445 hp

445hp

Torque 

850 lb-ft

1050 lb-ft

910 lb-ft

910lb-ft

The Ram 2500 has the lowest numbers in the class.

With the maximum 475 horses of power and 1050 lb-ft of torque integrated over the best in class 10-speed automatic transmission system, Ford leads the performance charts. 

2021 RAM 2500 Mega Cab Acceleration And Braking Performance

Stipulated over a 6.4L V8 HEMI VVT Engine, the RAM 2500 performs average while covering the 60 miles per hour sprint in 8.8 seconds, and the quarter-mile run in 17.2 seconds.

The RAM 2500 is thus a confident heavy-duty truck that is not very quick with its acceleration but still manages to deliver a capable decent performance in the segment.

2021 RAM 2500 diesel Mega Cab accelerate 0-60 mph in 8.8 sec

With a massive curb weight of 6,081 lbs, the RAM 2500 does exceptionally well in the braking segment. Embellished with 14.2-inch rotors in the front and 14.1-inch rotors in the rear, the RAM 2500 takes an impressive 135.5 feet from 60-0 mph which is the best when compared to all its competitors. 

The brake modulation of the RAM 2500 is precise and further increments the braking performance with the powerful anti-lock brakes and optional exhaust brakes which results in a linear and under control braking of the Mega cab.

Models

2021 RAM 2500 Mega Cab 

Ford F-250 Super Duty XL

Chevy Silverado 2500 HD WT

GMC Sierra 2500 HD Diesel Regular Cab

0-60 MPH 

8.8 seconds

8.5 seconds

7.4 seconds

6.5 seconds

Quarter Mile 

17.2 seconds

18.1 seconds

15.6 seconds

NA

Top Speed 

NA

96 mph

90.7 mph

88 mph

60-0 feet 

135.5 feet

140 feet

138 feet

NA

The GMC Sierra 2500 HD Diesel Regular Cab wins this segment with the fastest sprint time of 6.5 seconds in the 0-60 mph category. It is followed by the Chevy Silverado, Ford F-250, and the 2021 RAM 2500 Mega Cab.

With the best braking distance of 135.5 mph, the 2021 RAM 2500 Mega Cab certainly needs a special mention among all the competitors in the segment.

2021 RAM 2500 diesel Mega Cab Fuel Economy

6.0/10

The fuel-consumption figures of the 2021 RAM 2500 Diesel are pretty class-average when compared to most of its competitors. Boosted by a 6.4L V8 HEMI VVT engine integrated over a 6-speed automatic transmission system, the cab gives an estimated 14 mpg in the combined cycle.

The decent ratings of the RAM 2500 Mega Cab are normalized with the fuel capacity of 31 gallons, that too for the diesel version which allows you to cover a decent number of miles before making your way again to the fuel station.

Model

2021 RAM 2500 Mega Cab

Ford F-250 Super Duty XL

Chevy Silverado 2500 HD WT

GMC Sierra 2500 HD Diesel Regular Cab

MPG (City)

NA

14.6

NA

NA

MPG (Highway)

NA

15.5

14

NA

MPG (Combined)

14

15.7

NA

NA

Fuel Capacity (gallons)

31

34

36

36 

Range (City/Hwy/Combined) 

NA

NA

NA

NA

All the cars in the fuel-consumption figures deliver class-average ratings and as there are not much stated for this segment, the Ford F-250 gives pretty decent ratings than other competitors. However, with the biggest tank capacity of 36 gallons, the Chevy and GMC also accentuate vehement economic ratings in the segment.

2021 RAM 2500 diesel Mega Cab Interior

8.1/10

The interior of the 2021 RAM 2500 is characterized by space, high-quality finish, and a stupendous cabin configuration that outperforms itself as one of the plushest and simplified Pickups in the competition. 

The RAM 2500 is made up of an extraordinary cabin layout that is ergonomic, well-insulated, practical, and at the same time allows a vehement room for comfort and convenience. Adding boon to the cabin aesthetics are the leather upholstery and wood accents that give comfort and opulence in every occasion.

2021 RAM 2500 diesel Mega Cab cockpit area

As the name suggests the seats of the RAM 2500 Mega Cab offer a huge seating capacity with no one left for additional space. The Mega Cab version of the RAM 2500 allows room for five or six occupants, depending on whether you opt for a bench in front or not. It also stipulates additional storage space behind the rear seats that are readily available and accessible, no matter what trim configuration is chosen by the buyers. 

Model

2021 RAM 2500 Mega Cab (Expected)

Ford F-250 Super Duty XL 

Chevy Silverado 2500 HD WT

GMC Sierra 2500 HD Diesel Regular Cab

Seating Capacity

6

6

6

3

Front Row (Head/Shoulder/Leg) (in)

41.0/66.0/41.0

40.8/66.7/43.9

42.8/64.8/45.2

43.1/66/44.5

Rear Row (Head/Shoulder/Leg) (in)

39.9/65.7/40.3

40.4/65.6/43.6

40.5/64.3/40.9

NA

All the competitors in the segment offer similar interior configurations. However, with a seating capacity for three, the GMC Sierra 2500 performs least in the charts.

How’s the 2021 RAM 2500 Mega Cab’s infotainment system?

Adhering to the latest technology, the Infotainment system of the RAM 2500 Mega Cab offers pretty standard features along with some optional ones that are configured on the basis of the choice of trim.

The infotainment system in the 2500 Mega Cab is stipulated over a 5.0-inch touchscreen display, that gives effective access to almost everything through the Uconnect 3 system as standard. 

2021 RAM 2500 diesel Mega Cab infotainment screen

The specific highlights of the 2021 RAM 2500 Mega Cab include a four-speaker sound system that can be upgraded to six-speaker with the premium trims, Apple CarPlay, Android Auto, SiriusXM, HD Radio, and GPS Navigation system.

2021 RAM 2500 diesel Mega Cab dashboard
2021 RAM 2500 diesel Mega Cab infotainment screen
2021 RAM 2500 diesel Mega Cab seats
2021 RAM 2500 diesel Mega Cab speaker
2021 RAM 2500 diesel Mega Cab console
2021 RAM 2500 diesel Mega Cab  arm rest

2021 RAM 2500 diesel Mega Cab Exterior

5.0/10

The engineers at the RAM have displayed a magnificent craft in re-establishing their 2021 version of the 2500 Mega Cab. The 2500 design aesthetics is adopted from its 1500 sibling and caters for a center grille reflecting a bold RAM logo with flares that spit out on each side. 

The front hang is stipulated with a large hood, butch grille setup, and an updated front axle that reflects a vehement look for the buyers. 

2021 RAM 2500 diesel Mega Cab 

The rear hang is also stipulated with tailgate and LED lighting blended neatly to create an everlasting impact on the drive.

Further acting as a boon are the engine mounts, hood, front axle center, front suspension cross member, transmission cross member, and steering system gear that is developed solely using the finest aluminum material.

Model

2021 RAM 2500 Mega Cab (Expected)

Ford F-250 Super Duty XL

Chevy Silverado 2500 HD WT

GMC Sierra 2500 HD Diesel Regular Cab

Curb Weight (lbs) 

6081

6060

6242

6106

Length (In)

237.4

250.0

239.5

235.5

Width (In)

79.5

80.0

80.5

81.8

Height (In)

76.9

78.3

78.2

79.9

Ground Clearance (In)

6.1

8.5

9.6

10.2

Wheelbase (In)

149

160

153.7

141.5

Based on the dimensions of the car, the Ford F-250 Super Duty XL leads the segment followed by the Chevy Silverado 2500 HD WT, 2021 RAM 2500 Mega Cab, and the GMC Sierra 2500 HD.

However, the GMC Sierra is also vehement with the greatest ground clearance in the segment.

2021 RAM 2500 diesel Mega Cab three quarter view
2021 RAM 2500 diesel Mega Cab front view
2021 RAM 2500 diesel Mega Cab rear three quarter view
2021 RAM 2500 diesel Mega Cab  rear view
2021 RAM 2500 diesel Mega Cab  top view
2021 RAM 2500 diesel Mega Cab

2021 RAM 2500 diesel Mega Cab Safety

5.0/10

The heavy-duty pickup trucks are rarely tested by the NHTSA or the IIHS. The 2021 RAM 2500 Mega Cab is no different from the rest. However, safety is not a segment that can be compromised. 

So, in order to accentuate the safety aspects of the Mega Cab, there are a series of features that are included within its configuration as standard.

The safety features inside the 2020 RAM 2500 that is also expected in the upcoming version includes:

  • Traction control with electronic trailer sway control 
  • Hill-start assist
  • Daytime Running Lamps 
  • Airbags 
  • Rear Vision Camera
  • Teen Driver mode
  • Tire Pressure Monitoring System
  • StabiliTrak, stability control system with Proactive Roll Avoidance 
  • with Tire Fill Alert.

2021 RAM 2500 diesel Mega Cab Competition

9.1/10

2021 RAM 2500 Mega Cab Vs Ford F-250 Super Duty XL

The Ford F-250 is considered as America's favorite heavy-duty truck and it accentuates all the qualities that are to be stipulated within a premium pickup configuration. So, it certainly holds a prime spot in our buying preferences.

Ford F-250 Super Duty XL

2021 RAM 2500 Mega Cab Vs Chevy Silverado 2500 HD WT

With the ratings from the charts, it is pretty evident that both the trucks give a neck to neck competition in the heavy-duty segment. The Silverado accentuates premium towing capacities with muscular Exterior dimensions.

Chevy Silverado 2500 HD WT

The RAM, on the other hand, is well known for its stupendous interior dynamics and premium diesel variant. So, it is directly upon the priorities of the buyer, regarding the segment in which they are most interested.

2021 RAM 2500 Mega Cab Vs GMC Sierra 2500 HD Diesel Regular Cab

One name that can vouch for beating the RAM 2500 in the heavy truck segment is the GMC Sierra 2500 HD Diesel Regular Cab. The GMC leads the charts in performance, dimensions, fuel economy, and exterior configurations. So, it certainly stipulates a prime consideration for the buyers in the segment.

2021 RAM 2500 diesel Mega Cab Final Verdict

The 2021 RAM 2500 Mega Cab is an absolute symbol for the practicality that delivers exceptional towing capacity, stupendous interior configuration, and vehement dynamics. Its competition might have the advantage when it comes to power, but Ram has proven to provide what its competitors fail to, 

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