Showing the 2021 Outback Onyx Edition. We haven't verified this trim's engine; the numbers below cover every version of this model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
About every 2021 Outback
The 2021 Subaru Outback has 4 recall campaigns that may apply, covering air bags and transmission and drivetrain. Owner complaints total 298 filed with NHTSA, most often about windows, mirrors and wipers (97). Fuel economy is 26 to 29 mpg combined on gasoline, with a 5-year fuel cost of $11,200 to $12,490 at U.S. average prices. NHTSA gives it 5 stars overall.
Written by AI from public EPA and NHTSA data. Not a review.
Fuel economy
26–29 mpgcombined; city 23–26, highway 30–33; every version of this model year
Five years of fuel
$11,200–$12,490U.S. average; Ohio $10,010–$11,160 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA's VIN data lists these trims for the 2021 Outback. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 298 complaints with NHTSA about the 2021 Outback. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Visibility/wiper
97
1
0
0
Electrical system
76
2
1
1
Unknown or other
66
3
1
2
Forward collision avoidance
29
2
0
1
Engine
21
1
1
0
Vehicle speed control
19
5
0
2
Air bags
16
1
0
2
Power train
12
1
0
0
Fuel/propulsion system
10
2
0
0
Visibility
10
0
0
0
Lane departure
7
0
0
0
Service brakes
7
1
0
0
9 more parts
Structure
7
0
0
0
Wheels
6
0
0
0
Steering
5
0
0
0
Back over prevention
4
2
0
0
Exterior lighting
4
0
0
0
Engine and engine cooling
2
0
0
0
Suspension
2
0
0
0
Parking brake
1
0
0
0
Seats
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 4 recall campaigns for the 2021 Outback over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
Subaru of America, Inc. (Subaru) is recalling certain 2020-2022 Outback and Legacy vehicles. A capacitor in the sensors for the Occupant Detection System (ODS) may crack and short circuit, which can prevent the front passenger air bag from deploying in a crash.
Risk: An air bag that does not deploy during a crash can increase the risk of injury.
Remedy: Dealers will replace the ODS sensors on the front passenger seat, free of charge. Owner notifications were mailed February 3, 2025. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRA-24.
Subaru of America, Inc. is recalling certain model year 2021 Crosstrek, 2022 Forester, 2021-2023 Legacy, and Outback vehicles. An insufficient weld may allow water to enter the inhibitor switch, causing it to fail.
Risk: An inoperative inhibitor switch may prevent the reverse lights from illuminating and the rearview camera image from displaying, increasing the risk of a crash.
Remedy: Dealers will replace the inhibitor switch, free of charge. Owner notification letters were mailed January 8, 2024. Owners may contact Subaru customer service at 1-800-782-2783. Subaru's number for this recall is WRQ-23.
Subaru of America, Inc. (Subaru) is recalling certain 2020-2021 Outback and Legacy vehicles. A programming error in the Transmission Control Unit (TCU) may allow the clutch to engage before the drive chain is completely clamped.
Risk: An improperly secured drive chain may slip and break, causing a loss of drive power and increasing the risk of a crash.
Remedy: Dealers will reprogram the TCU, inspect TCU data for chain slip, and visually inspect the chain guide. If evidence of chain slippage or damage is found, the transmission will be replaced. Repairs will be performed free of charge. Owner notification letters are expected to be mailed August 24, 2022. Owners may contact Subaru's customer service at 1-844-373-6614. Subaru's number for this recall is WRK-22. This recall is an expansion of previous recall number 21V-955.
Subaru of America, Inc. (Subaru) is recalling certain 2021 Outback and Impreza vehicles. The continuously variable transmission (CVT) select lever cable nut may not have been tightened properly, allowing the nut to loosen.
Risk: A loose nut can lead to a lost of retention in the CVT select lever cable and the gear selector not functioning properly, increasing risk of crash.
Remedy: Subaru will notify owners, and dealers will inspect, and, if necessary, tighten the nut, free of charge. The recall began February 12, 2021. Owners may contact Subaru customer service at 1-844-373-6614. Subaru's number for this recall is WRA-21.
Carmakers sent NHTSA 488 service bulletins and notices that cover the 2021 Outback, the latest on Oct 5, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (285), equipment (146), power train (63), engine (53), engine and engine cooling (50).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2021 Outback.
These are searches on those sites; we don't copy or check their listings. Your ZIP is used for these links and never kept.
Specs
EPA class: small sport utility vehicle. EPA greenhouse gas score: 5–6 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
Outback All-Wheel Drive
2.5 L, 4 cyl
Automatic (AV-S8)
Regular Gasoline
26 / 33 / 29
Outback All-Wheel Drive
2.4 L, 4 cyl, turbo
Automatic (AV-S8)
Regular Gasoline
23 / 30 / 26
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data