The 2010 Volvo S40 is built on the Ford-shared P1 platform with reliable Volvo inline-5 engines, but suffers from catastrophic automatic transmission failures and costly engine internal failures when maintenance is neglected. The naturally-aspirated 2.4L is more durable than the turbo variants.
Powershift (M66) Automatic Transmission Failure
Common · high severity
Typical onset: 70,000-110,000 mi
Symptoms: Harsh shifting between 2nd-3rd gears, Shuddering or jerking during acceleration, Transmission overheating warning on dash, Complete loss of drive or stuck in gear
Fix: The dual-clutch Powershift transmission suffers premature clutch pack wear and mechatronic unit failures. Repair requires transmission removal (8-12 hours labor), clutch module replacement, and software updates. Many shops recommend replacement with remanufactured unit due to high internal failure rates.
Estimated cost: $4,000-7,000
Turbo Engine Piston Ring Failure and Oil Consumption
Occasional · high severity
Typical onset: 90,000-150,000 mi
Symptoms: Excessive blue smoke from exhaust on startup, Oil consumption exceeding 1 quart per 1,000 miles, Loss of compression in one or more cylinders, Misfires and rough idle as condition worsens
Fix: The 2.5L turbo I5 develops piston ring land failures, particularly on engines with extended oil change intervals. Repair requires complete engine disassembly, cylinder honing, new pistons and rings (18-24 hours labor). Many owners opt for used engine replacement instead due to labor costs.
Estimated cost: $4,500-8,000
PCV System and Oil Trap Failure
Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Rough idle and hesitation, Whistling or hissing noise from engine bay, Oil leaks from rear main seal area, Check engine light with lean fuel mixture codes
Fix: The PCV breather box and oil trap clog with sludge, causing vacuum leaks and oil contamination. Requires intake manifold removal to access (4-6 hours labor). Replace entire PCV system including all hoses and the oil trap assembly, not just individual components.
Estimated cost: $800-1,400
Transmission and Engine Mount Failure
Common · medium severity
Typical onset: 80,000-120,000 mi
Symptoms: Excessive vibration at idle, especially in Drive, Clunking noise during acceleration or deceleration, Shifter or steering wheel shake, Visible engine movement when revving
Fix: The hydraulic transmission mount and upper torque mount fail frequently on both manual and automatic models. The transmission mount in particular is expensive. Replace both upper and lower mounts together (3-4 hours labor) to prevent accelerated wear on the remaining mount.
Estimated cost: $600-1,100
Electronic Throttle Body Failure
Occasional · medium severity
Typical onset: 70,000-130,000 mi
Symptoms: Sudden loss of throttle response while driving, Limp mode with reduced power, Check engine light with throttle position codes, Engine stalling at idle or when coming to stops
Fix: The electronic throttle body motor and position sensors fail, causing dangerous sudden power loss. Cleaning rarely helps long-term. Requires throttle body replacement and adaptation procedure with VIDA diagnostic software (2-3 hours labor). Genuine Volvo part required for proper communication.
Estimated cost: $700-1,200
Angle Gear (AWD Transfer Case) Oil Leaks and Failure
Occasional · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Oil dripping from rear of engine/transmission area, Grinding or whining noise from rear drivetrain, AWD warning light on dash, Vibration during acceleration (AWD models only)
Fix: AWD models develop angle gear seal leaks and internal bearing failures, often from never-changed fluid. Catch leaks early and service every 30k miles. Once internal damage occurs, requires angle gear replacement (6-8 hours labor). Front-wheel-drive models obviously not affected.
Estimated cost: $1,800-2,800
Owner tips
Change transmission fluid every 40,000 miles regardless of 'lifetime fill' claims—especially critical for Powershift automatics
Use full synthetic 0W-30 oil and change every 5,000 miles maximum to prevent turbo engine piston ring failures
Replace PCV system preventively at 60k miles to avoid expensive oil consumption and seal damage
AWD models require angle gear fluid changes every 30k miles—most aren't maintained and fail expensively
Budget $1,500/year for deferred maintenance items if buying high-mileage—these nickle-and-dime you with European parts costs
Pass unless you find a single-owner, meticulously-maintained example with full service records—the Powershift transmission and turbo engine failures make this a risky used buy compared to contemporary Mazda3 or Honda Accord.
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.
Fitment notes: Battery located in trunk; requires vent tube connection
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Every control module on the 2005-2011 Volvo S40 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Power Steering Control Module (PSCM)2.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Steering column area or integrated with electric power steering motor
🔧 VIDA/DiCE
⚠️ Electric power steering only (not all models); calibration required after replacement; 2008+ models
📍 Integrated with CEM or separate module near ignition switch
🔧 VIDA/DiCE
⚠️ Key programming required; all keys must be present; typically integrated with CEM on this generation
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
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.
Consequence: POSITIONING OF THE SEAT BEYOND THE INTENDED MAXIMUM CAN CAUSE INCREASED RISK OF INJURY TO THE PASSENGER IN THE EVENT OF A CRASH.
Remedy: DEALERS WILL INSPECT THE FRONT POWER SEAT STOPS FOR BOTH FRONT SEATS FOR THE PRESENCE OF AN "END STOP" AND REPAIR THE VEHICLES AS NECESSARY FREE OF CHARGE. THE SAFETY RECALL BEGAN ON DECEMBER 23, 2010. OWNERS MAY CONTACT VOLVO AT 1-800-458-1552 OR AT [email protected].
VOLVO IS RECALLING CERTAIN VEHICLES EQUIPPED WITH GARMIN 760 PORTABLE GLOBAL POSITIONING SYSTEM (GPS) UNITS BECAUSE THE BATTERIES ON THOSE UNITS MAY OVERHEAT.
Consequence: AN OVERHEATED BATTERY COULD LEAD TO A FIRE.
Remedy: VOLVO ADVISES OWNERS TO PLEASE STOP USING THE GARMIN PORTABLE GPS DEVICE IMMEDIATELY, AND VISIT THE GARMIN WEBSITE TO DETERMINE IF THEIR UNIT IS AFFECTED. THE UNIT'S BATTERY WILL BE REPLACED WITH A NEW BATTERY AND A SPACER WILL BE INSERTED ON TOP OF THE BATTERY NEXT TO THE PCB. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON NOVEMBER 18, 2010. OWNERS MAY CONTACT GARMIN AT 866-957-1981 OR VISIT GARMIN'S WEBSITE AT WWW.GARMIN.COM/NUVIBATTERYPCBRECALL.
Performance
Horsepower
227hp
Torque
236lb-ft
0–60 mph
6.5sec
Quarter mile
15.0sec
Top speed
130mph
Capability & size
Curb weight
3,415lb
Wiper blades
Second generation S40 (2004-2011). Sedan body style has no rear wiper.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2010 Volvo S40 2.5L Turbo I5 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.