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2021 Chevrolet

Suburban 4WD

Auto 10-spd, 8 cyl, 6.2 L, SIDI

Chevrolet Suburban: best and worst years
2021 Chevrolet Suburban 4WD (photo 1 of 2)
Photodave_7 from Lethbridge, CanadaCC BY 2.0Wikimedia Commons

Overview

Body
Standard Sport Utility Vehicle 4WDEPA, from EPA, last updated 6/11/2026
Drivetrain
4-Wheel DriveEPA, from EPA, last updated 6/11/2026
Transmission
Automatic 10-spdEPA, from EPA, last updated 6/11/2026
Powertrain
GasEPA, from EPA, last updated 6/11/2026
Fuel
PremiumEPA, from EPA, last updated 6/11/2026

Engine & performance

Cyl
8EPA, from EPA, last updated 6/11/2026
Aspiration
Naturally aspiratedEPA, from EPA, last updated 6/11/2026
Start-stop system
NoEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy
19 mpgEPA, from EPA, last updated 6/11/2026
MPG City
13 mpgEPA, from EPA, last updated 6/11/2026
MPG Comb
16 mpgEPA, from EPA, last updated 6/11/2026
Fuel $/yr
$4,800EPA, from EPA, last updated 6/11/2026
CO₂
570 g/miEPA, from EPA, last updated 6/11/2026
Eco Score
2/10EPA, from EPA, last updated 6/11/2026
Smog score
3/10
Elec. Range
0 miEPA, from EPA, last updated 6/11/2026
SmartWay certified
No

Dimensions & capacity

Length
226 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Width
81 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Height
76 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Wheelbase
134 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Curb Weight
5,474 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Safety NHTSA, model year

Overall crash rating
★★★★
Rollover rating
★★★★★
Stability control (ESC)
Standard
Forward-collision warning
Standard
Lane-departure warning
Optional
Recalls
12
Owner complaints
173
Reported injuries
5

Feature availability

Which features come standard, cost extra, or are locked to a pricier trim arrives with the next data phase. Standard equipment shows here today.

Standard

Reported problems NHTSA owner complaints, model year

  • ENGINE32%
  • POWER TRAIN14%
  • FUEL/PROPULSION SYSTEM9%
  • ELECTRICAL SYSTEM7%
  • UNKNOWN OR OTHER5%
  • FORWARD COLLISION AVOIDANCE5%

Source: NHTSA owner complaints, 233 total.

Chevrolet Suburban: best and worst years

Federal investigations NHTSA defect investigations, model year

  • RQ26001Openopened Jan 16, 2026ENGINE

    Loss of motive power due to engine failure post recall remedy

  • EA25007Openopened Oct 23, 2025ENGINE

    Loss of motive power due to engine failure

  • PE25001opened Jan 16, 2025ENGINE

    Loss of motive power due to engine failure

  • PE21010opened Apr 9, 2021AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT

    Air Bag Malfunction

Warranty manufacturer terms, by make

Basic
3 yr / 36k mi
Powertrain
5 yr / 60k mi
Roadside assistance
5 yr / 60k mi
Maintenance
1 yr / 12k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.