The 3.6R stickered around $36,000 new as the top Outback and now sits near $12,500–$14,500 — it took a bigger dollar hit than the four-cylinder simply because it started higher, but the curve is now flat. You're buying a lot of durable engine for the money, at the stable part of its life.
This is the fifth-generation Outback (2015–2019) in its six-cylinder form — the same capable, practical wagon as the 2.5i, but with the EZ36 flat-six in place of the FB25. That single swap changes the character of the car: more power, more refinement, and crucially, none of the four-cylinder's oil-consumption story. It's the enthusiast's and long-hauler's Outback.
The 3.6L EZ36 makes 256 horsepower and is one of Subaru's genuinely great engines — a chain-driven flat-six with no head-gasket reputation and no oil-consumption defect, the kind that runs 250,000-plus miles when maintained. It's paired with the heavier-duty TR690 Lineartronic CVT, a strong match for the extra torque and generally durable. The trade-offs are at the pump: it prefers premium and returns only about 22–24 mpg. Towing is rated at 2,700 pounds, and the six handles it with ease.
Remarkably little from the engine — the EZ36 is the strength, not a risk. The single expensive component is the CVT, and a healthy one runs well past this mileage; a failed unit is a $5,500–$6,000 replacement, which is why confirming it is the main condition. The one genuinely characteristic failure is the Harman Kardon head unit, at $1,200–$1,500 — annoying but not catastrophic, and easy to test on the driveway. The Starlink module's battery drain is the usual Subaru software nuisance to confirm fixed.
There's no engine red flag here — that's the point of buying the six. The flags are the CVT (confirm it's smooth) and the electronics (confirm the head unit and camera work), plus the standard recall check by VIN including any Takata campaign. This is a car where the expensive part — the engine — is the safe part.
On the drive, the six should be smooth and strong and the CVT seamless — any shudder or flare is the one thing worth chasing. Work every infotainment function, the backup camera, and Bluetooth to confirm the head unit is healthy. Check the dipstick for level and cleanliness (the six isn't a burner, but you still confirm), cycle the AWD on a tight turn, and ask about battery history for the DCM tell.
At ~110,000 miles, plan for the next year or two: a CVT fluid service if undocumented (~$250–$400), spark plugs if not done (~$300–$400 — the six's plugs are more labor), a coolant flush if there's no record (~$120–$150), and brake fluid (~$100). Wheel bearings are a known wear item (~$300–$500 per corner). Budget premium fuel into your running costs. Front suspension is the likely larger item as it passes 110k.
Budget roughly $3,600 over three years at about 12,000 miles a year, assuming the CVT and electronics check out clean. That covers routine oil services, the CVT fluid service, spark plugs, one brake service, a likely wheel bearing, tires, and a buffer for the head unit. It excludes fuel and insurance (the six's premium-fuel appetite is a running cost, not a repair), and it excludes a CVT replacement — the outcome the pre-purchase check exists to rule out.
The buyer who wants the most durable, most capable Outback and doesn't mind paying at the pump for it — someone who tows occasionally, drives long distances, or simply wants the engine that outlasts the car. Confirm the CVT and electronics and it's arguably the smartest used Outback you can buy.
GOOD CAR — WITH CONDITIONS. The flat-six is the reason to choose this one, and it's the part you don't have to worry about. The two conditions are a healthy CVT and working electronics — confirm the transmission shifts smoothly with no shudder, and that the Harman Kardon head unit and camera all function. Make both a written condition of the sale. If they come back clean, this is one of the most durable used wagons on the road. If the CVT shudders or the head unit is dead, negotiate the cost off using the figures above, or walk. The engine will outlast almost everything else on the road — you're just confirming the two things around it.