Manufacturer-recommended service intervals and open recall alerts for your 2021 Subaru Crosstrek.
ZIP unlocks trusted shops near you. Mileage unlocks personalized service due dates. Either or both — your call.
Your ZIP stays with us. We share your city with shops, never your ZIP. Read our Promise →
Subaru's symmetrical AWD system places unusually high demands on differential fluid and transfer case service — skipping these is the most common cause of premature drivetrain wear. Older Subarus with the EJ25 engine (pre-2011) require timing belt replacement; FB and FA engines (2011+) use a maintenance-free chain. Subaru's published intervals below align with the owner's manual Schedule II (severe) which most US drivers qualify for.
POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
Campaign #23V755000 · Sep 11, 2023
Issue: 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.
Fix: 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.
Critical for safety and preventing major damage
Replace 0W-20 full-synthetic oil and filter every 6,000 miles. WRX/STI 2.0L/2.5L turbo: 3,750 miles. Non-turbo FB engines: 6,000 miles severe / 10,000 normal.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Rotate tires every 7,500 miles. Critical on Subaru AWD — uneven tread depth across all 4 tires (>2/32") forces the center differential to bind, damaging the AWD coupling.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect brake pads, rotors, calipers, and parking brake every 7,500 miles. Outback and Forester pads commonly last 35,000-50,000 miles depending on terrain.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Replace front differential and manual transmission fluid every 30,000 miles. CVT models use proprietary Subaru CVT fluid — a separate item.
Estimated cost — typical U.S. ranges
Dealer
~$150–$195
Shop
~$105–$135
DIY
~$20–$50
Replace rear differential fluid every 30,000 miles. Use Subaru 75W-90 GL-5 — substitutes can cause whining noises within months.
Estimated cost — typical U.S. ranges
Dealer
~$150–$195
Shop
~$105–$135
DIY
~$20–$50
Subaru CVT models (Outback, Legacy, Forester, Crosstrek, Impreza, Ascent): replace Lineartronic CVT fluid every 30,000 miles severe / 60,000 normal. Subaru High-Torque CVT-II fluid only — incorrect fluid destroys the chain-and-pulley system.
Estimated cost — typical U.S. ranges
Dealer
~$360–$500
Shop
~$255–$355
DIY
~$80–$180
CVT fluid is manufacturer-specific and pricey — do NOT substitute conventional ATF.
Older Subarus with the EJ25 boxer engine (Forester, Outback, Legacy 1996-2010): replace timing belt every 105,000 miles. FB and FA boxer engines (2011+) use a chain — no scheduled replacement.
Estimated cost — typical U.S. ranges
Dealer
~$935–$1175
Shop
~$655–$825
DIY
Pro only
On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.
Replace DOT 3 brake fluid every 30,000 miles or 30 months. Subaru's brake hold and EyeSight automatic emergency braking depend on uncontaminated fluid.
Estimated cost — typical U.S. ranges
Dealer
~$180–$200
Shop
~$125–$140
DIY
~$10–$25
DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.
Keeps your vehicle running smoothly and efficiently
Replace engine air filter every 30,000 miles. WRX/STI: inspect every oil change due to the higher airflow demand of the turbo intake.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
Iridium plugs every 60,000 miles on FB engines. WRX/STI 2.5L turbo: 30,000 miles due to higher cylinder pressures and EGT.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
Subaru Super Coolant (blue): first change at 137,500 miles or 11 years, then every 30,000 miles. Do not substitute green or orange — head gasket sealing chemistry depends on the formula.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Extends the life of your vehicle and improves comfort
Replace cabin air filter every 15,000 miles. Behind the glove box on most Subaru models.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
What drivers and federal regulators have officially reported about the 2021 Subaru Crosstrek.
VISIBILITY/WIPER
32 NHTSA complaints · 2021-03 → 2024-02
“Spontaneous windshield crack. No impact or apparent cause. Available for inspection. Based on online research and your database, this is a common occurrence. Reporting to Subaru dealer has been initiated.”
“WINDSHIELD CRACKED WITH LESS THAN 1000 MILES ON THE CAR. NEVER HEARD OR SAW ANY ROCK OR OTHER DEBRIS HIT THE WINDSHIELD”
ENGINE
9 NHTSA complaints · 2023-05 → 2026-05
“Check engine light came on while driving. All Advanced Driver Assistance Systems were disabled. Code is P26A3: Thermo Control Valve is faulty. This is a known problem and Subaru has addressed it by redesigning the Thermo Control Valve in 2021…”
“The issue is the Engine Coolant Bypass Valve. This causes the Engine to not take in as much coolant resulting in the engine getting much hotter than it should, thus putting those in the car’s safety at risk…”
POWER TRAIN
9 NHTSA complaints · 2021-07 → 2025-02
“SHUDDERING - CVT belt or pulley not working properly? JERKING, HESITATION - Crosstrek will not go when the gas pedal is pressed or hesitates or pauses for a moment after the gas pedal is engaged”
“I have been experiencing shuddering/jerking/hesitation in my vehicle since July. The dealership has had it in their service department several times and cannot diagnose the issue. Subaru of America was contacted and gave no resolution to repairing the vehicle…”
ENGINE
4 NHTSA complaints · 2021-08 → 2025-07
“On two incidents randomly and without warning the car failed to accelerate while driving in traffic on an open road and I had to coast to safety and put in park, then drive, then travel less than five miles home…”
“I was crossing two lanes of a very busy ocean front street when the engine “bogged down” . I let off on the gas pedal and then depressed it again, which then caused the engine to go off…”
UNKNOWN OR OTHER
6 NHTSA complaints · 2022-03 → 2026-02
“Sunroof exploded outward, the majority of the glass was blown away. The sunshade was open. The temperature was 56 degrees. I was traveling north on I 15 in Davis Couty, Utah. I was not injured, there were no other occupants…”
“We were driving on a major highway today and the sunroof of my Subaru Crosstrek randomly exploded with a loud bang. Glass shattered everywhere in the car, covering us passengers with shards…”
ELECTRICAL SYSTEM
6 NHTSA complaints · 2022-01 → 2026-06
“The DCM on our 2021 Subaru Crosstrek is causing a parasitic drain on the battery. It left us stranded several times. We replaced the battery twice in the past 15 months…”
“The battery dies completely, seemingly under colder conditions. In the first case it was after 6 days of not turning the car on, however the next time it happened after only a day and a half of not turning on the vehicle…”
FORWARD COLLISION AVOIDANCE
4 NHTSA complaints · 2022-04 → 2026-05
“The automatic braking system engaged at highway speed while changing lanes with no other vehicle or object in front of the vehicle. I was accelerating to change lanes when the sensor started beeping and the car slammed on the brakes causing a sliding skid…”
“Subaru Eyesight system engaged randomly with no forward obstacles. Dashboard lit up, signaled alarm, and brakes engaged causing the car's nose to bottom-out. This has happened twice, thankfully at low speeds and thankfully without another car rear ending me…”
POWER TRAIN
5 NHTSA complaints · 2022-04 → 2025-02
“DRIVE TRAIN, TRANSMISSION ISSUE. CAR WAS RUNNING, IN PARK. I GOT OUT TO PICK UP A FLYER FROM YARD. CAR ACCELERATED AND DROVE THROUGH GARAGE DOOR, AND CRASHED INTO THE BACK WALL OF GARAGE. NO ONE HAS INSPECTED THE CAR, AS IT HAPPENED LATE YESTERDAY…”
“I was driving my 2021 Subaru Crosstrek slowly in a parking lot when it unexpectedly accelerated on its own without me pressing the gas pedal. I believe the Crosstrek was now going 40mph. I tried to shut off the engine and brake at the same time but neither one had any effect…”
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 21, 2026. Investigation data refreshed Jul 21, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2021 Subaru Crosstrek reflects Subaru's published service intervals. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.