2021 Chevrolet Suburban Fuel/propulsion System Problems

NHTSA component category: FUEL/PROPULSION SYSTEM · data through 07/14/2026

21Fuel/propulsion System complaints

11.8%Of all 178 complaints

#3Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How fuel/propulsion system ranks on this vehicle

ENGINE75 · 42.1%

POWER TRAIN34 · 19.1%

FUEL/PROPULSION SYSTEM21 · 11.8%

ELECTRICAL SYSTEM16 · 9%

Unspecified / other13 · 7.3%

Share of the 178 complaints citing each category; one complaint can cite several. Full breakdown on the 2021 Chevrolet Suburban overview page.

What owners report

“Driving vehicle on a highway at 55mph, tried to speed up, no propulsion. Fuel injector went bad.”NHTSA complaint 11684184 — filed 08/31/2025

“I was standing at a red light with my foot on the brake and the car went into neutral and stalled. I could not restart…”NHTSA complaint 11683089 — filed 08/26/2025

“What component or system failed or malfunctioned, and is it available for inspection upon request? Fuel pump How was your safety or the safety of…”NHTSA complaint 11669413 — filed 06/26/2025

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Fuel/propulsion System complaints by year filed

Frequently asked questions

Does the 2021 Chevrolet Suburban have fuel/propulsion system problems?

Fuel/propulsion System is the #3 most-reported problem area on the 2021 Chevrolet Suburban: 21 of 178 complaints on file (11.8%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2021 Chevrolet Suburban have in total?

178 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 6 involved a crash, 1 involved a fire, 5 reported injuries, and none reported deaths.

What does NHTSA's fuel/propulsion system category include?

NHTSA assigns each complaint to standard component categories; this page reports the FUEL/PROPULSION SYSTEM category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.