2007 SUBARU OUTBACK

3.0L H6AWDCVTgas
5-Year Cost of Ownership
$10,357 maintenance + known platform issues
~$2,071/yr · 170¢/mile equivalent · $5,649 maintenance + $3,873 expected platform issues
Compare this engine
vs
2.4L H4 Turbo
vs
2.5L H4
Common Problems & Known Issues

The 2007 Outback is mechanically identical to the Legacy wagon underneath. The 2.5L turbo and naturally-aspirated 2.5L both suffer from head gasket failures, while the 3.0L H6 is generally more reliable but less common. Transmission longevity is fair, but the 4EAT auto has known oil cooler and mount issues.

Head Gasket Failure (2.5L engines)

Common · high severity
Typical onset: 90,000-150,000 mi
Symptoms: External oil seepage at block/head mating surface, visible as dark oil weeping from sides of engine, White exhaust smoke on cold start, sweet smell from coolant burning internally, Coolant loss with no visible leaks, occasional overheating or temp fluctuations, Bubbles in coolant reservoir or oil in coolant (less common, indicates internal breach)
Fix: Full head gasket replacement requires pulling engine or lifting it significantly. Both heads must be resurfaced, timing belt/water pump/seals replaced while apart. Expect 14-18 labor hours. Many shops pull the engine for access. Use OEM or multi-layer steel (MLS) gaskets, not composite.
Estimated cost: $2,200-3,500

Transmission Oil Cooler Line Failure (4EAT automatic)

Common · high severity
Typical onset: 80,000-140,000 mi
Symptoms: Transmission fluid puddle under vehicle, usually passenger side near radiator, Sudden loss of all forward gears or slipping due to fluid loss, Pink or red fluid dripping from front of car, Overheating transmission if small leak goes unnoticed
Fix: Steel lines from trans to radiator-mounted cooler corrode and rupture. Requires new OEM lines, often both replaced preventively. Subaru issued updated stainless lines. 2-3 labor hours if caught early. If transmission ran low on fluid, expect internal damage and possible rebuild.
Estimated cost: $400-700 for lines only; $2,500-4,000 if trans damaged

Turbo Failure / Oil Starvation (2.5L Turbo only)

Occasional · high severity
Typical onset: 100,000-160,000 mi
Symptoms: Blue smoke on acceleration or at idle, oil consumption over 1 qt per 1,000 mi, Loss of boost, sluggish acceleration, check engine light for boost/pressure codes, Loud whining or grinding noise from turbo, metallic rattling, Oil in intercooler or intake piping
Fix: Turbo bearings fail from oil coking or debris from upstream engine wear. Turbo replacement requires 6-8 hours, must inspect for root cause (banjo bolt screen clogging, oil feed line blockage). If metal entered engine, expect bottom-end damage. Always replace oil feed and return lines, use OEM or quality reman turbo.
Estimated cost: $1,800-3,200 for turbo; $4,500-7,000 if engine internals damaged

Wheel Bearing Failure (front and rear)

Common · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Growling or humming noise that increases with speed, changes with steering input, Vibration through steering wheel or floor at highway speeds, ABS or traction control light if bearing has integrated tone ring, Excessive play when rocking wheel by hand with vehicle lifted
Fix: Front and rear wheel bearings are hub assemblies, not serviceable separately. Fronts fail more often due to AWD stress. 2-3 hours per side, straightforward replacement. Use OEM or known-quality aftermarket (Timken, NSK). Avoid cheap eBay units that fail in 10,000 miles.
Estimated cost: $350-550 per wheel

Transmission Mount Collapse (all)

Common · low severity
Typical onset: 80,000-130,000 mi
Symptoms: Clunk or thud when shifting from Park to Drive or Reverse, Vibration at idle that smooths out at higher RPM, Visible sagging or cracking of rear transmission crossmember mount, Drivetrain lurch during acceleration or deceleration
Fix: Rear trans mount is a common wear item on these, especially with turbo torque. Easy replacement, 1-1.5 hours. Also inspect pitch stopper mount (engine side). OEM or quality polyurethane replacements both work fine.
Estimated cost: $200-350

Brake Line Corrosion (salt-belt states)

Occasional · high severity
Symptoms: Brake pedal goes to floor, spongy feel with no external leaks visible, Rusty fluid or visible rust perforations on steel brake lines along frame rails, Brake fluid leaking at line fittings or along line runs, Proportional loss of braking, soft pedal even after bleeding
Fix: NHTSA recall covered some VINs for rear brake lines, but fronts and non-recalled vehicles still corrode in rust states. Full line replacement (all four corners) is 4-6 hours. Use NiCopp or stainless pre-bent kits, avoid mild steel. This is a safety-critical repair.
Estimated cost: $600-1,200 depending on extent

Ignition Switch Failure (NHTSA recall)

Occasional · medium severity
Symptoms: Key won't turn or binds in ignition cylinder, No crank, no start despite good battery and starter, Intermittent loss of electrical power while driving, Dash lights flicker or accessories cut out randomly
Fix: Subaru recalled certain VINs for faulty ignition switch internals. If not recalled, replacement is straightforward, 1-2 hours. Must reprogram immobilizer if switch contains chip reader. Check recall status by VIN first.
Estimated cost: $0 if recall applies; $250-450 otherwise
Owner tips
  • Change transmission fluid every 30,000 miles with Subaru ATF or equivalent spec—these autos are sensitive to fluid condition
  • Inspect coolant every oil change for oil contamination (milky appearance), early warning for head gasket breach
  • If buying a 2.5L that hasn't had head gaskets done, budget for it immediately or negotiate price accordingly
  • Turbo models: verify oil feed line banjo bolt filters were cleaned or removed during any oil system work
  • Undercoat brake lines and inspect annually if in salt states—brake line failure is catastrophic
The H6 is a solid buy if maintained; the 2.5L is a gamble unless head gaskets are already done with paperwork to prove it—budget $3,000-4,000 for deferred engine work on any 2.5L over 100k miles.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
504 jobs across 15 categories
Building an app?
Free API access to all this data — 50 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included. Built by the same team.
Try ShopBase →