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Transmission and drivetrainPart report

2006 Subaru Legacy Transmission and drivetrain Problems

Complaints
8about this part
Share
9%of 87 total for the year
Median mileage
40,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the transmission and drivetrain of the 2006 Subaru Legacy, 9% of the 87 complaints for this model year. Where a mileage was given, the median is 40,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“While traveling at approximately 55mph, my Legacy's throttle became unresponsive, the check engine light came on, and the cruise light began to flash. I was able to safely coast off the road and a subsequent code check revealed a code 2138 (throttle position sensor). In the ensuing months I replaced the tps, which didn't help, then reseated the connection on the throttle itself, which worked for about six months. The problem has recently recurred and seems to be a common problem.”

NHTSA complaint #10513569, filed 2013-05, 85,000 miles

“I have an 06 Subaru Legacy gt.at my 30,000mile checkup the report states good except the rear brake pads & rotors which is rated; may require follow up attention.the rear rotors were machined. At 37,778 miles the radio was replaced due to it shorting out. At this mileage my coolant cap is no longer holding pressure & has to be replaced. At 44,542miles, the invoice says replace rear brakes as only the brake pads were replaced & the rear rotors were machined 6,000miles ago. …”

NHTSA complaint #10237821, filed 2008-08, 29,000 miles

“My 2006 Subaru Legacy wagon suddenly loses acceleration sometimes, check engine light comes on, cruise control flashes, and the gas pedal does nothing. The car throws a p2138 code throttle/pedal position sensor code when checked. This has happened about 10 times over the last year. If you restart the car, it some times goes away, most times it requires several restarts and time. The car will do this when moving fast on the highway or just sitting. The gas goes limp and there is no revving or acceleration. …”

NHTSA complaint #10546660, filed 2013-10, 124,000 miles

“About a month ago I purchased a 2006 Subaru Legacy 2.5 gt mt. I have two major complaints that most people complain about. 1) hesitation under acceleration. This problem is known by Subaru. One tech told me that the ecu needs to be reflashed, but that Subaru has not come up with a flash to fix the problem yet. 2) bad smell from the clutch. Happens mostly in stop and go traffic, but occurs at other times too. I've had it happened when I first start the car, after driving it for a long time, cruising on the highway and shifting. It is very bothersome.”

NHTSA complaint #10151464, filed 2006-02

“The contact owns a 2006 Subaru Legacy outback (na). While driving 40 MPH, the vehicle failed to respond when the contact attempted to accelerate. The check engine indicator illuminated prior to the failure. The contact inspected the vehicle and was unable to diagnose the cause of the failure. The manufacturer was notified. The vehicle was not repaired. The failure mileage was 73,000.”

NHTSA complaint #10597019, filed 2014-06, 73,000 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
202213%
202126%
202076%
201911%
201822%
201743%
2016139%
2015159%
2014611%
20131218%
20123438%
20114728%
20105033%
200923%
200869%
200713%
200689%
2005137%
200424%
200358%
2002713%
200123%
20001415%
19991819%
19981412%
19971712%
199687%
199595%
199458%
1993912%
199259%
19911621%
19901417%

Other parts of the 2006 Subaru Legacy

Vehicle speed control
30 complaints
Electrical system
17 complaints
Engine
16 complaints
Fuel system
16 complaints
Air bags
13 complaints
Brakes
10 complaints
Other or unknown
6 complaints
Engine cooling
4 complaints
Suspension
4 complaints
Electronic stability control
2 complaints
Steering
2 complaints
Wheels
2 complaints

← All problems reported for the 2006 Subaru Legacy

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology