Passenger airbag sensor fails in humid conditions
Leaves "airbag OFF" despite a passenger being present
Check engine light: On
The largest single complaint category for this vehicle (~40 complaints): the passenger airbag occupant-detection sensor fails in humid conditions or with a passenger present, leaving 'airbag OFF' despite occupancy — described by owners as 'the number 1 concern for 2013 Subaru Impreza owners.'
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Wiring harness fires in climate control and window switch areas
Some cases resulted in total vehicle loss
Check engine light: On
6 documented fires for this sampled year, in the climate control and window switch areas; the 'total loss' language in some reports indicates fires severe enough to destroy the vehicle rather than being contained to a single component.
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Excessive oil consumption, unfixed at the dealer
Burning a quart every 1,500 miles, with a burning-oil smell through the vents
Check engine light: On
One owner reports burning a quart every 1,500 miles, with a burning-oil smell through the vents, reported as unfixed at the dealer.
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Complete engine failure while highway driving
Tied to a blown fuse in the wire harness, requiring ECM replacement
Check engine light: On
A sudden loss of power at highway speed with an unusual cause: a blown fuse in the wire harness caused complete engine failure, requiring ECM replacement.
$255107,000 mi
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Rear brake line corrosion, complete brake failure
"Pedal to the floor"; also reported on the Subaru Legacy
Check engine light: On
Brake line corrosion at rear distribution blocks/unions causes complete brake failure — 'pedal to the floor' — echoing the same rear-brake-line-corrosion theme found on the Subaru Legacy, researched immediately before this vehicle in the same batch.
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CVT transmission valve body defects
Sudden power loss; an extended warranty suggests the manufacturer recognized the problem
Check engine light: On
CVT transmission valve body defects cause sudden power loss and complete failure; an extended warranty exists for this issue, suggesting a known manufacturing defect. Separately, one documented $4,000 CVT failure was later refunded by Subaru, consistent with the extended-warranty pattern NHTSA describes.
$4,00088,800 mi
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Misfires from the plug wires
Improved spark plug wires correct misfire issues
Check engine light: Off
Improved spark plug wires correct misfire issues. This is among the more frequently reported issues on this generation, with 37 owner reports on file.
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Check engine light due to a failed knock sensor
The check engine light comes on due to a failed knock sensor
Check engine light: On
The check engine light comes on due to a failed knock sensor. This is among the more frequently reported issues on this generation, with 40 owner reports on file.
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Head gasket failure from cooling faults
Cooling system problems cause head gasket failure
Check engine light: Off
Cooling system problems cause head gasket failure. This is among the more frequently reported issues on this generation, with 30 owner reports on file.
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Belt light and alarm with an empty seat
The passenger seatbelt light and alarm issue persists with no passenger present
Check engine light: Off
The passenger seatbelt light and alarm issue persists with no passenger present. This is among the more frequently reported issues on this generation, with 20 owner reports on file.
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Rear engine oil leak (plastic baffle)
Oil leaks from the rear of the engine due to a failed plastic oil baffle plate
Check engine light: Off
Oil leaks from the rear of the engine due to a failed plastic oil baffle plate. This is among the more frequently reported issues on this generation, with 24 owner reports on file.
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Technical Service Bulletin for ABS Control Module
A technical service bulletin addresses the ABS control module
Check engine light: Off
A technical service bulletin addresses the ABS control module. This is among the more frequently reported issues on this generation, with 12 owner reports on file.
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Front cam and crank seal oil leaks
Engine oil leaks from the camshaft or crankshaft front seals
Check engine light: Off
Engine oil leaks from the camshaft or crankshaft front seals. This is among the more frequently reported issues on this generation, with 20 owner reports on file.
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A passenger airbag occupant-detection sensor failing in humid conditions or with a passenger present — leaving 'airbag OFF' despite occupancy — is described by owners as 'the number 1 concern for 2013 Subaru Impreza owners,' the largest single complaint category (~40 complaints).