2012 Volvo S40 Problems: 2 Known Issues
2012 model year · 3,180+ owner reports · Updated September 2026
According to Au7o's analysis of 3,180+ owner reports, the 2012 Volvo S40 has 2 documented known issues, with 2 rated critical. The most serious are PCV System Failure Causing Oil Leaks and Engine Damage ($300-$1,500 repair) and T5 Turbocharger Failure from Oil Starvation ($1,200-$3,500 repair). The most commonly reported issue is PCV System Failure Causing Oil Leaks and Engine Damage with 2,200 owner reports. Across all issues with published estimates, repair costs range from $300 to $3,500. DIY maintenance guides at au7o.io.
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All 2 Known Issues
NHTSA Recalls4 recalls
STRUCTURE:FRAME AND MEMBERS
VOLVO IS RECALLING CERTAIN MODEL YEAR 2011 S40 PASSENGER VEHICLES. A CRACK ON THE TOP SIDE OF THE PASSENGER SIDE SUPPORT MEMBER IN THE ENGINE COMPARTMENT MAY HAVE DEVELOPED DURING THE FORMING PROCESS IN COMPONENT PRODUCTION.
SEATS
VOLVO IS RECALLING CERTAIN PASSENGER VEHICLES EQUIPPED WITH POWER FRONT PASSENGER SEATS. THE FRONT SEAT RAIL'S DETECTION SYSTEM WAS MANUFACTURED INCORRECTLY AND MAY PERMIT THE PASSENGER TO FORWARD THE SEAT BEYOND THE INTENDED MAXIMUM.
EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)
VOLVO IS RECALLING CERTAIN VEHICLES EQUIPPED WITH GARMIN 760 PORTABLE GLOBAL POSITIONING SYSTEM (GPS) UNITS BECAUSE THE BATTERIES ON THOSE UNITS MAY OVERHEAT.
STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS
VOLVO IS RECALLING MY 2008-2009 VEHICLES. A SECTION OF THE POWER STEERING RETURN LINE HOSE WAS NOT PROPERLY VULCANIZED (CURED) AND DOES NOT MEET SPECIFICATIONS. IF THE POWER STEERING RETURN HOSE FAILS, A SUDDEN RUPTURE OF THE HOSE CAN OCCUR.
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Frequently Asked Questions
What are the most common Volvo S40 problems?
According to Au7o's analysis of 3,180+ owner reports, the 2012 Volvo S40 has 2 documented issues. The most frequently reported are: PCV System Failure Causing Oil Leaks and Engine Damage, T5 Turbocharger Failure from Oil Starvation. Of these, 2 are rated critical and should be addressed promptly.
Is the Volvo S40 reliable?
The 2012 Volvo S40 has 2 known issues documented across 3,180+ owner reports. 2 issues are rated critical: PCV System Failure Causing Oil Leaks and Engine Damage and T5 Turbocharger Failure from Oil Starvation. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Volvo S40 problems?
Repair costs for known Volvo S40 issues range from $300 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, PCV System Failure Causing Oil Leaks and Engine Damage, typically costs $300-$1,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2004-2012 Volvo S40 PCV System Failure Causing Oil Leaks and Engine Damage?
The PCV (positive crankcase ventilation) system on the S40/V50 2.5L T5 engine is a well-known failure point. The system uses a complex oil separator and breather box that clogs with oil sludge, causing excessive crankcase pressure. This pressure forces oil past every seal in the… Repairs typically run $300-$1,500. Severity: high.
What is the 2004-2012 Volvo S40 T5 Turbocharger Failure from Oil Starvation?
The Mitsubishi TD04L-14T turbocharger on the S40/V50 T5 fails prematurely when oil supply is restricted. The most common cause is a clogged PCV system (which back-pressures the oil return line), deteriorated oil feed line banjo bolt screens, or extended oil change intervals allow… Repairs typically run $1,200-$3,500. Severity: high.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.