2025 GMC Sierra 3500HD vs 2025 Toyota Tundra

$47,500 · Truck

$40,090 · Truck

Comparison Overview

The most significant numerical divergence between the 2025 GMC Sierra 3500HD (Car1) and the 2025 Toyota Tundra (Car2) lies in fuel economy, with the Tundra achieving 20 combined MPG versus the Sierra's implied lower rating due to its heavy-duty classification. Car1 commands a substantial $7,410 MSRP advantage, starting at $47,500 compared to Car2's $40,090. This price gap reflects performance disparities, as the Sierra generates 401 hp and 464 lb-ft of torque, significantly outperforming the Tundra's 348 hp and 405 lb-ft of torque—a 53 hp difference. Dimensionally, the Sierra is bulkier, measuring 80.9 inches in height versus the Tundra's 78.0 inches. Both vehicles utilize a 10-speed shiftable automatic transmission and are configured in rear-wheel drive.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Toyota Tundra

The 2025 Toyota Tundra is the superior choice for commuting due to its measurable 20 combined MPG fuel efficiency rating.

👨‍👩‍👧‍👦 Best for Families

2025 Toyota Tundra

The Tundra's lower MSRP of $40,090 makes it the more accessible and practical baseline vehicle for families on a budget.

🏎️ Best for Enthusiasts

2025 GMC Sierra 3500HD

The 2025 GMC Sierra 3500HD delivers significantly higher performance metrics, boasting 401 horsepower and 464 lb-ft of torque.

💰 Best Value

2025 Toyota Tundra

With a starting price $7,410 lower than Car1 and superior fuel economy, the Tundra offers better immediate cost value.

Choose the GMC Sierra 3500HD if...

Maximum powertrain output is essential, as the Sierra offers 401 hp.
Towing or hauling requirements necessitate the inherent capability of a 3500HD platform.
A taller stance is required, indicated by the Sierra's 80.9-inch height compared to 78.0 inches for the Tundra.

Choose the Toyota Tundra if...

Lower acquisition cost is paramount, evidenced by the $40,090 MSRP.
Fuel economy is a priority, as the Tundra achieves 20 combined MPG.
The driver prefers a slightly narrower vehicle dimensionally, with the Tundra measuring 80.2 inches wide versus 81.9 inches for the Sierra.

Key Dimensions

Dimension	GMC Sierra 3500HD	Toyota Tundra
Length	236.3"	233.6"
Width	81.9"	80.2"
Height	80.9"	78.0"
Wheelbase	142.0"	145.7"

Features Comparison

Safety

Feature	GMC	Toyota
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	✓	✓
Lane Keeping Assist System	—	✓
Rear Head Airbags	—	✓
Rear Door Child Safety Locks	—	✓
Brake Assist	—	✓
Rear Headrests	—	3
Rear Height Adjustable Headrests	—	✓
Rear Center 3-Point Seatbelt	—	✓

Engine

Feature	GMC	Toyota
Base Engine Displacement	6.6 L	3.4 L
Number of Cylinders	V8	V6
Base Engine Type	gas	gas
Horsepower	401 hp @ 5200 rpm	348 hp @ 5200 rpm
Torque	464 lb-ft @ 4000 rpm	405 lb-ft @ 2000 rpm
Number of Valves	16	24
Camshaft Type	Overhead valves (OHV)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	GMC	Toyota
Transmission Type	10-speed shiftable automatic	10-speed shiftable automatic
Drivetrain Type	rear wheel drive	rear wheel drive
Rear Differential Type	Locking	—

Fuel

Feature	GMC	Toyota
Fuel Type	regular unleaded	regular unleaded
EPA Driving Range (City/Highway)	0/0 mi.	405.0/517.5 mi.
Fuel Tank Capacity	36.0 gal.	22.5 gal.
EPA Fuel Economy (City/Highway)	—	18/23 MPG
EPA Fuel Economy (Combined)	—	20 MPG

Comfort & Convenience

Feature	GMC	Toyota
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	✓	—
Tilt and Telescopic Steering Wheel	—	✓
Audio Controls on Steering Wheel	—	✓
Cruise Control on Steering Wheel	—	✓
Electric Power Steering	—	✓
Adaptive Cruise Control	—	✓
Rear Cupholders	—	✓
Rear Door Pockets	—	✓
Overhead Console with Storage	—	✓
Front Seatback Storage	—	✓
Interior Air Filtration	—	✓
Dual Vanity Mirrors	—	✓

In Car Entertainment

Feature	GMC	Toyota
Infotainment Display	7.0 in	8.0 in
AM/FM Stereo	✓	✓
Speaker System	2	6
Android Auto (Wired)	✓	—
Apple CarPlay (Wired)	✓	—
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Speed Sensitive Volume Control	✓	—
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓
Satellite Radio	—	With Real Time Traffic
Satellite Radio Trial Period	—	3 months

Power Feature

Feature	GMC	Toyota
One-Touch Power Windows	2	4
Power Door Locks	✓	—
Heated Mirrors	✓	✓
Keyless Entry	—	✓

Frontseats

Feature	GMC	Toyota
Front Head Room	43.1 in.	41.0 in.
Front Leg Room	44.5 in.	41.2 in.
Front Shoulder Room	66.1 in.	65.0 in.
Front Hip Room	60.9 in.	62.6 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
Seat Material: Cloth	—	✓
Front Seat Type: Bucket	—	✓

Rearseats

Feature	GMC	Toyota
Rear Head Room	—	38.5 in.
Rear Leg Room	—	33.3 in.
Rear Shoulder Room	—	63.4 in.
Rear Hip Room	—	60.5 in.
Split-Folding Rear Seatback	—	✓

Tires and Wheels

Feature	GMC	Toyota
Wheel Finish	Painted Steel	—
Wheel Diameter	18 in	—
Tire Type	All Terrain	All Season
Tire Size	LT275/70R18	P245/75R18
Spare Tire Type	Full Size Matching	Full Size Non-Matching
Spare Tire Location	Underbody Mounted	Underbody Mounted
Wheel Material	—	Steel
Wheel Size	—	18 x 8.0 in

Suspension

Feature	GMC	Toyota
Front Suspension Type	Independent	Independent
Stabilizer Bar	✓	✓

Warranty

Feature	GMC	Toyota
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.	2 yr./ unlimited mi.
Complimentary Scheduled Maintenance	1 yr./ unlimited mi.	2 yr./ 25000 mi.

Frequently Asked Questions

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

What is the horsepower difference between the 2025 Sierra 3500HD and the 2025 Tundra?

The 2025 GMC Sierra 3500HD provides a substantial 401 horsepower, whereas the 2025 Toyota Tundra delivers 348 horsepower. This results in a 53 hp advantage for the Sierra.

How much more does the 2025 GMC Sierra 3500HD cost than the Tundra?

The Sierra 3500HD has an MSRP of $47,500, making it $7,410 more expensive than the Tundra's $40,090 starting price.

Does the Tundra offer better fuel efficiency than the Sierra 3500HD?

Yes, based on available data, the Tundra is rated at 20 combined MPG (18 city/23 highway), while the heavy-duty Sierra 3500HD is not provided with a comparable fuel economy rating.

Are the drive types and transmissions comparable between these two trucks?

Both the Sierra 3500HD and the Tundra are equipped with a 10-speed shiftable automatic transmission and are specified here as rear-wheel drive models.

How do the physical dimensions compare, specifically height and length?

The Sierra is slightly longer at 236.3 inches compared to the Tundra’s 233.6 inches. In height, the Sierra is significantly taller at 80.9 inches versus the Tundra's 78.0 inches.