2027 Chevrolet Suburban Engine Options: V8 or Duramax Diesel
Webb Chevy Plainfield | (815) 436-2071 | 16140 S Lincoln Hwy, Plainfield, IL 60586
Part of our 2027 Chevrolet Suburban buyer’s guide from Webb Chevy Plainfield.
How do the three Suburban engines compare?
The 6.2L is the most powerful, the Duramax has the most torque and range, and the 5.3L is the standard choice that suits most drivers.
| Powertrain | Output | Torque | Offered on |
|---|---|---|---|
| 5.3L EcoTec3 V8, 10-speed | 355 hp | 383 lb.-ft. | LS, LT, RST, Z71, Premier |
| 6.2L EcoTec3 V8, 10-speed | 420 hp | 460 lb.-ft. | High Country (std); RST, Z71, Premier (avail.) |
| Duramax 3.0L Turbo-Diesel, 10-speed | 305 hp | 495 lb.-ft. | LT, RST, Z71, Premier, High Country (avail.) |
Which engine is best for an I-55 commute?
The Duramax. Its 728-mile EPA-estimated maximum highway range means fewer fill-ups for drivers who commute from Plainfield into Chicago or down to Joliet every day.
When does the 6.2L V8 make sense?
If you tow near the 8,300-pound limit or want the quickest Suburban for merging onto I-355, the 6.2L adds 65 hp over the 5.3L. It is standard on High Country and available on RST, Z71 and Premier.
Is the standard 5.3L V8 enough?
For most families, yes. With 355 hp and Dynamic Fuel Management, it handles daily errands, school runs and weekend trips without strain.
Key Takeaways
- 5.3L V8: 355 hp, 383 lb.-ft.
- 6.2L V8: 420 hp, 460 lb.-ft.
- Duramax 3.0L diesel: 305 hp, 495 lb.-ft.
- Duramax range up to 728 miles EPA-estimated max highway.
- Every engine uses a 10-speed automatic.
Frequently Asked Questions
Is the Suburban diesel reliable for daily driving?
The Duramax 3.0L is designed for daily use and delivers the longest range of the three Suburban engines.
Does the Suburban diesel qualify for Super Cruise?
Yes. Super Cruise is now available with the Duramax 3.0L on eligible trims.
Which Suburban engine has the most horsepower?
The 6.2L V8, at 420 horsepower.
Can I compare engines on a test drive in Plainfield?
Yes. Call Webb Chevy Plainfield at (815) 436-2071 to drive gas and diesel Suburbans back to back.
Prices shown are Chevrolet starting MSRPs for the 2027 model year and do not include destination freight, taxes, title, license or dealer fees. Capacity and range figures are Chevrolet estimates; confirm towing ratings on the vehicle’s trailering label.
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