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2021 Forest River SierraProblems, recalls & complaints

NHTSA has logged 3 owner complaints about the 2021 Forest River Sierra, most often about the electrical system. It is covered by 1 safety recall, and for recall 21V-378 the manufacturer reports only 61% of affected cars repaired.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls1Lowest repair rate 61%Owner complaints31 with a crash, fire or injuryTop problem1Electrical system

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through July 31, 2023. Updated daily.

Complaints by system

Where the 2021 Forest River Sierra has problems

3 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Electrical system10
Firerelated11
Service brakes10

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

1 recall

2021 Forest River Sierra recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

61%repaired · 2023 Q4

Equipment: recreational vehicle/trailer

Recall 21V-378 · May 24, 2021 · 18 vehicles · 11 repaired

Risk. Improperly tightened bolts could cause the trailer body to detach from the chassis, increasing the risk of a crash.

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Forest River.

Best & worst years

2021 vs. every other Sierra year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Sierra median. How we score

'97'98'99'00'01'02'03'04'05'06'07'08'09'10'11'12'13'14'15'16'17'18'19'21'22'24'25'27
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
In owners' words

What Sierra owners report

Recent electrical system complaints filed with NHTSA, shortened. Personal details are removed.

The contact owns a 2021 Forest River Sierra fifth wheel trailer. The contact stated while driving approximately 55 mph, the trailer brakes failed to engage while the brake pedal was depressed. The contact stated that the "trailer wiring fault" message was displayed. The vehicle was diagnosed and…
Complaint 11427488 · Aug 2, 2021

Own a 2021 Sierra?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.