Power transfer unit replacement cost: shop vs. mobile mechanic
Power transfer unit (PTU) replacement (AWD/4WD crossover): estimated U.S. average labor cost at a repair shop and with a mobile mechanic. Labor only; parts not included. Estimates, not quotes.
Average shop cost
$420
Range $200–$695 (labor)
2.0–5.0 h × $100–$139/h estimated shop labor rate
Parts not included.
Average mobile mechanic cost
$625
Range $300–$1,045 (labor)
Shop labor × 1.5 (mobile convenience premium)
Parts not included.
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What the estimate covers
Labor to replace the power transfer unit (PTU, the front-mounted gearbox that sends power to the rear driveshaft on many AWD/4WD crossovers) with a new or remanufactured unit. Replacement units often come pre-filled with fluid. The unit, seals, fluid top-off, skid plate removal where fitted, and any related driveshaft or axle work are extra; engine and drivetrain layout (for example 4-cylinder vs V6) changes access a lot. Several models had recalls or warranty extensions for PTU failures (for example Jeep Cherokee): check your VIN at nhtsa.gov/recalls and ask a dealer about extended coverage before paying.
Labor hours used: 2–5 h, our own editorial estimate (not taken from a licensed labor guide).
How these estimates work
- Labor hours (Mechanic Notes estimate): each job has our own editorial "typical labor hours" range. Real times depend on the vehicle, engine and condition, and are not taken from any licensed labor guide.
- Shop labor rate (assumption): $100–$139/hour, the band where about half of surveyed U.S. general repair shops put their average labor rate (PartsTech / OEC U.S. General Auto Repair Shop Survey (about 700 shops, Sept 2025), as reported by Ratchet+Wrench), scaled by your area's mean wage for automotive service technicians divided by the U.S. mean ($27.13/h; BLS Occupational Employment and Wage Statistics, May 2025, SOC 49-3023; verify on bls.gov). States and metros without wage data use the next-wider area.
- Average shop cost = typical hours × estimated shop rate. The headline number uses the middle of both ranges (or a job’s stated typical hours, where the usual job sits near the low end); the range uses low hours × low rate to high hours × high rate. Rounded to $5.
- Average mobile mechanic cost = shop labor × 1.5 (mobile convenience premium: travel and convenience are built in). This is a default assumption, not a survey result.
- Parts are not included. Parts prices vary too much by vehicle and brand to estimate honestly here; price parts separately.
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