2025 GMC Sierra 3500HD vs 2025 Ram 3500

$47,500 · Truck

$46,570 · Truck

Comparison Overview

The primary numerical divergence between the 2025 GMC Sierra 3500HD and the 2025 Ram 3500 lies in their physical dimensions, with the Sierra measuring 80.9 inches tall compared to the Ram's 77.8 inches, a difference of 3.1 inches. Performance metrics show the Ram achieves a slight horsepower advantage with 405 hp versus the Sierra's 401 hp. However, the Sierra counters with a superior torque output of 464 lb-ft, significantly higher than the Ram's 429 lb-ft. In terms of starting Manufacturer's Suggested Retail Price (MSRP), the Ram undercuts the Sierra by $930, listing at $46,570 compared to $47,500. Both heavy-duty trucks utilize rear-wheel drive and regular unleaded fuel, but the Sierra employs a 10-speed automatic transmission while the Ram uses an 8-speed unit, suggesting potential differences in gearing efficiency across their operational ranges.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Ram 3500

The lower MSRP of $46,570 for the Ram 3500 provides a more accessible entry point for the cost-conscious daily driver.

👨‍👩‍👧‍👦 Best for Families

2025 GMC Sierra 3500HD

The greater height and width of the Sierra 3500HD (80.9 inches high and 81.9 inches wide) likely translate to marginally superior interior space for passengers.

🏎️ Best for Enthusiasts

2025 GMC Sierra 3500HD

The Sierra 3500HD’s 464 lb-ft of torque is substantially higher than the Ram’s 429 lb-ft, offering better low-end pulling capability.

💰 Best Value

2025 Ram 3500

The Ram 3500 achieves a slightly higher horsepower rating of 405 hp while carrying a lower starting MSRP.

Choose the GMC Sierra 3500HD if...

You prioritize maximum low-end pulling strength, evidenced by its 464 lb-ft of torque.
You require a taller stance, as the Sierra stands 80.9 inches high versus the Ram's 77.8 inches.
You prefer a drivetrain utilizing a 10-speed automatic transmission over an 8-speed unit.

Choose the Ram 3500 if...

Your budget requires the lowest initial outlay, with an MSRP of $46,570.
You seek marginal gains in engine output, achieving 405 horsepower compared to the Sierra's 401 hp.
You prefer a slightly more compact overall footprint, indicated by its shorter length of 232.0 inches.

Key Dimensions

Dimension	GMC Sierra 3500HD	Ram 3500
Length	236.3"	232.0"
Width	81.9"	79.4"
Height	80.9"	77.8"
Wheelbase	142.0"	140.0"

Features Comparison

Safety

Feature	GMC	Ram
Lane Departure Warning	✓	—
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Front Head Airbags	✓	✓
Passenger Airbag Occupant Sensing Deactivation	✓	✓
Electronic Stability Control	✓	✓
Traction Control System	✓	✓
LATCH System	✓	✓
Anti-lock Brakes (ABS)	4-Wheel	4-Wheel
Front Ventilated Disc Brakes	✓	✓
Rear Ventilated Disc Brakes	✓	—
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
Integrated Turn Signal Mirrors	✓	—
Front Headrests	2	2
Front Height Adjustable Headrests	✓	✓
Front Center 3-Point Seatbelt	✓	✓
Engine Immobilizer	✓	✓
Rear Solid Disc Brakes	—	✓
Brake Preparation System	—	✓
Brake Assist	—	✓
Front Fog Lights	—	✓

Engine

Feature	GMC	Ram
Base Engine Displacement	6.6 L	6.4 L
Number of Cylinders	V8	V8
Base Engine Type	gas	gas
Horsepower	401 hp @ 5200 rpm	405 hp @ 5600 rpm
Torque	464 lb-ft @ 4000 rpm	429 lb-ft @ 4000 rpm
Number of Valves	16	16
Camshaft Type	Overhead valves (OHV)	Overhead valves (OHV)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	—

Drive Train

Feature	GMC	Ram
Transmission Type	10-speed shiftable automatic	8-speed shiftable automatic
Drivetrain Type	rear wheel drive	rear wheel drive
Rear Differential Type	Locking	Limited Slip

Fuel

Feature	GMC	Ram
Fuel Type	regular unleaded	regular unleaded
EPA Driving Range (City/Highway)	0/0 mi.	0/0 mi.
Fuel Tank Capacity	36.0 gal.	32.0 gal.

Comfort & Convenience

Feature	GMC	Ram
Push Button Start	✓	✓
Tilt Steering Wheel	✓	✓
Power Steering	✓	✓
Rear View Camera	✓	✓
Cruise Control	✓	—
Front Cupholders	✓	✓
Front Door Pockets	✓	✓
Single Zone Climate Control	✓	✓
Turn Signal Indicators in Mirrors	✓	—
Transmission Controls on Steering Wheel	—	✓
Cruise Controls on Steering Wheel	—	✓
Adaptive Cruise Control	—	✓
Interior Air Filtration	—	✓
Passenger Vanity Mirror	—	✓

In Car Entertainment

Feature	GMC	Ram
Infotainment Display	7.0 in	8.4 in
AM/FM Stereo	✓	✓
Speaker System	2	4
Android Auto (Wired)	✓	✓
Apple CarPlay (Wired)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Speed Sensitive Volume Control	✓	—
Auxiliary Audio Input	—	✓
Satellite Radio	—	✓

Power Feature

Feature	GMC	Ram
One-Touch Power Windows	2	—
Power Door Locks	✓	—
Heated Mirrors	✓	✓

Frontseats

Feature	GMC	Ram
Front Head Room	43.1 in.	39.8 in.
Front Leg Room	44.5 in.	40.9 in.
Front Shoulder Room	66.1 in.	65.9 in.
Front Hip Room	60.9 in.	62.9 in.
Seat Material: Vinyl	✓	✓
Front Seat Type: 40-20-40 Split Bench	✓	✓
Driver Seat Manual Adjustments	4-way	4-way
Passenger Seat Manual Adjustments	4-way	4-way

Tires and Wheels

Feature	GMC	Ram
Wheel Finish	Painted Steel	Painted Steel
Wheel Diameter	18 in	—
Tire Type	All Terrain	All Season
Tire Size	LT275/70R18	LT275/70R18
Spare Tire Type	Full Size Matching	Full Size Non-Matching
Spare Tire Location	Underbody Mounted	Underbody Mounted
Wheel Size	—	18 x 8.0 in

Suspension

Feature	GMC	Ram
Front Suspension Type	Independent	—
Stabilizer Bar	✓	✓

Warranty

Feature	GMC	Ram
Basic Warranty	3 yr./ 36000 mi.	3 yr./ 36000 mi.
Drivetrain Warranty	5 yr./ 100000 mi.	5 yr./ 60000 mi.
Corrosion/Rust Warranty	6 yr./ 100000 mi.	5 yr./ unlimited mi.
Roadside Assistance	5 yr./ 60000 mi.	5 yr./ 60000 mi.
Complimentary Scheduled Maintenance	1 yr./ unlimited mi.	—

Frequently Asked Questions

Common questions about comparing the 2025 GMC Sierra 3500HD and 2025 Ram 3500.

Which truck offers better immediate power delivery for towing?

The 2025 GMC Sierra 3500HD has a torque advantage, producing 464 lb-ft compared to the 2025 Ram 3500's 429 lb-ft. More torque is typically the crucial metric for initiating heavy trailer moves from a standstill.

Is the difference in MSRP significant between these heavy-duty models?

Yes, the 2025 Ram 3500 starts at $46,570, making it $930 cheaper than the 2025 GMC Sierra 3500HD's $47,500 MSRP for comparable base trims.

How does the transmission differ between the two vehicles?

The Sierra 3500HD features a 10-speed shiftable automatic transmission, potentially offering finer control over power delivery than the Ram 3500's 8-speed shiftable automatic transmission.

If I frequently park in height-restricted garages, which truck is better?

The 2025 Ram 3500 is significantly shorter, standing at 77.8 inches tall, compared to the Sierra 3500HD, which measures 80.9 inches high.

Do these trucks use premium fuel?

No, both the 2025 GMC Sierra 3500HD and the 2025 Ram 3500 are specified to run on regular unleaded fuel, which reduces ongoing operational costs compared to diesel variants.