2018 Subaru Outback cruise control problems
severe Owners of the 2018 Subaru Outback have filed 17 NHTSA complaints about the cruise control, typically surfacing around 8,000 miles at roughly $600 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See cruise control across all vehicles →
| Model year | cruise control complaints |
|---|---|
| 2014 Outback | 10 |
| 2015 Outback | 20 |
| 2016 Outback | 15 |
| 2017 Outback | 25 |
| 2018 Outback (this page) | 17 |
| 2019 Outback | 19 |
| 2020 Outback | 5 |
| 2021 Outback | 8 |
| 2022 Outback | 3 |
The failure pattern owners describe
Owners report sudden, uncommanded acceleration in 2018 Subaru Outbacks—the vehicle accelerates without the driver's foot on the gas pedal, often while brakes are being applied. In nearly a dozen complaints, this happens during low-speed maneuvers like parking or at traffic lights, but also on the highway. One owner came to a complete stop in Park and the engine revved to full throttle. Another accelerated in Neutral from 0 to 40 mph on its own. Brake pedals go stiff or fail entirely during these events. Collision warnings don't sound. Air bags don't deploy.
Acceleration stops only when the engine is shut off, the transmission is shifted to Neutral, or the vehicle crashes into an object. Dealerships can't replicate the problem or find the cause. One owner found references to low-pressure fuel pump failures in similar-year Outbacks, but Subaru has offered no official diagnosis.
EyeSight driver-assist issues also appear: one owner's windshield cracked spontaneously while parked, disabling forward collision avoidance and lane keep assist. The X-Mode button correlates with sudden acceleration in at least two reports. Stopping distances are inconsistent and unreliable per one owner.
No recalls or technical service bulletins are mentioned in any narrative. Owners have contacted Subaru corporate; they've been directed to dealers who cannot help. Class action lawsuits for the 2018 Outback have been filed by owners.
Same Subaru Outback cruise control reports on nearby years: 2015 · 2016 · 2017 · 2019
Failure modes owners describe
Sudden uncommanded acceleration while braking
Vehicle accelerates without driver pressing the accelerator pedal, often while brake pedal is being depressed or immediately after braking input. Occurs at various speeds from stop to highway speeds. Owners report inability to stop vehicle using normal braking, requiring excessive brake force or gear shifting to regain control.
When: Most common at low speeds during parking maneuvers, at traffic lights, or during normal driving. Reported from as early as 680 miles to 41,000 miles.
Symptoms owners cite: Sudden forward acceleration without foot on gas pedal; Vehicle accelerates while brakes are applied; Acceleration occurs after shifting to Neutral—vehicle continues to accelerate in Neutral; Throttle response decoupled from accelerator pedal input; Requires excessive brake force to slow vehicle; Vehicle accelerates at full throttle in Park or while idling; Engine revs wildly without accelerator input
Repairs/costs cited: Dealership diagnostic attempts unsuccessful in multiple cases; cause could not be determined. One owner referenced low-pressure fuel pump failure in similar year/model complaints. Most vehicles not repaired; insurance involvement in total-loss cases.
Recalls/TSBs owners mention: Subaru of America contacted in at least one case, recommended dealership inspection. Dealership diagnostics unable to replicate or identify issue. Class action lawsuits reported by owners for 2018 Outback with similar sudden acceleration issues.
Throttle lag or non-response during acceleration
Vehicle fails to respond when driver depresses accelerator pedal, particularly during highway speeds when attempting to pass or merge. Separate from sudden acceleration events.
When: Early in vehicle life (680 miles reported)
Symptoms owners cite: Vehicle fails to respond when accelerator pedal is pressed; Occurs multiple times when attempting to pass or merge at highway speeds (55 MPH); Delayed throttle response
Repairs/costs cited: Dealership (Romano Subaru, Syracuse, NY) unable to find cause. Vehicle not repaired.
Recalls/TSBs owners mention: Manufacturer referred owner to local dealer for inspection; no recall or TSB mentioned.
Brake pedal stiffness and unresponsive braking
Brake pedal becomes very stiff and difficult to depress, and in some cases brakes fail to function during sudden acceleration events. Owners unable to stop vehicle using normal braking pressure.
When: Intermittent throughout vehicle ownership
Symptoms owners cite: Brake pedal becomes very stiff and difficult to depress; Brakes do not function during sudden acceleration events; Requires excessive force on brake pedal to slow vehicle
Repairs/costs cited: Not addressed in any service records provided.
Automatic emergency braking malfunction or failure
Safety feature either fails to engage when sudden acceleration occurs, or engages inappropriately during normal driving when vehicle is maintaining safe distance. One owner reports emergency braking kicked in and stopped vehicle unexpectedly during safe following distance, creating rear-end collision risk.
When: At time of collision events
Symptoms owners cite: Collision warning/parking collision warning does not sound prior to impact; Air bags do not deploy during collision; Emergency braking fails to activate during sudden acceleration events; Emergency braking activates inappropriately during normal driving when following at safe distance
Repairs/costs cited: Not addressed; appears to be a collision detection or algorithm issue rather than component failure requiring replacement.
EyeSight driver assist system malfunction
EyeSight-equipped vehicles experience throttle control issues and collision avoidance failures. Windshield cracks impair EyeSight function. One owner reports stopping distance set too close and varies unpredictably, making system unreliable.
When: Throughout vehicle operation; windshield crack occurred spontaneously while parked
Symptoms owners cite: X-Mode button activation correlates with sudden acceleration onset; X-Mode turns itself off during use; Windshield spontaneously cracks from top of passenger side vertically, impairing EyeSight sensors; Loss of forward collision avoidance capability; Loss of lane keep assist capability; EyeSight automatic stopping distance set too close and varies inconsistently
Repairs/costs cited: Windshield replacement would be required for systems relying on EyeSight camera clarity. Stopping distance algorithm not addressable by owner.
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the cruise control problem on the 2018 Subaru Outback?
It's a meaningful issue. 17 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $600.
At what mileage does the cruise control typically fail?
Across the 10 complaints that reported odometer mileage, most cruise control failures cluster between 4,400 and 28,000 miles, with the median around 8,000. A quarter of owners report trouble before 4,400; a quarter make it past 28,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $600 for cruise control repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to cruise control?
No active recalls currently cover cruise control issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.