Control arm replacement cost: shop vs. mobile mechanic

Control arm replacement (one arm, bushings and ball joint included in the arm): estimated U.S. average labor cost at a repair shop and with a mobile mechanic. Labor only; parts not included. Estimates, not quotes.

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What the estimate covers

Labor to replace one control arm (most often a front lower arm) that comes with new bushings and, where built in, the ball joint. Pressing separate bushings into an old arm, seized bolts, rust and some rear multi-link arms take longer. The arm is extra, and a wheel alignment is needed afterward (not included). Worn control arm bushings typically cause clunks over bumps, wheel bounce or wander; many shops recommend replacing arms in pairs.

Labor hours used: 1–3 h, our own editorial estimate (not taken from a licensed labor guide).

Problem pages that use this estimate

Sourced owner-reported problems on Mechanic Notes where this is the usual repair:

• 2017 Subaru Forester: Lower control arm bushing worn causing wheel bounce
• 2018 Subaru Forester: Control arm bushings failure

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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Page last updated 2026-10-30.