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The same brake job is $465 at the shop and $365 in the driveway — the customer saves $100 and you still clear $86/hr on a full route.
Mobile mechanics win on a structural advantage: no bay rent, no lift lease, no front desk — so $95 an hour undercuts the shop’s $145 while paying you more than the shop wage. But the model lives or dies on the route: three jobs with an hour and a half of driving pays $86.67 per true hour; one job across town pays $40. This calculator prices any job both ways (book hours times rate plus marked-up parts), shows the customer their savings — the pitch that writes itself — and computes your honest day rate with windshield time included.
Mobile mechanics use it to write the pitch: the $465 shop brake job is $365 in the driveway — customer saves $100, you still clear $86/hr on a full route.
Yes — flat-rate is the industry standard for a reason: it prices the JOB, not your Tuesday. Published flat-rate guides exist precisely so a brake job costs the same whether the tech is a rookie or a master. When you beat book time, that efficiency is your earned margin — the same efficiency the shop pockets when its techs run fast. The honesty boundary: charge book time, quote book time, and when a job fights back (rusted bolts, wrong parts, hidden damage), document and bill the real time or the revised book figure with the customer’s approval. Never stretch a job description to cover a slow day — flat-rate works because it is a published, checkable standard, and customers can verify it. The calculator prices in book hours for exactly this reason.
Anything needing a lift (engine and transmission swaps, exhaust systems, subframe work), alignments and machine-shop work, and diagnostics without a cap — quote diagnostics as a flat one-hour fee credited to the repair, or the rabbit hole eats your day at $0/hr. Also turn away the geography trap: a single job 40 minutes from anything else pays your rate for the wrenching and nothing for the drive — the route is the wage, so cluster bookings by ZIP code, set a service-call minimum ($25–50 or a one-hour minimum), and quote out-of-territory calls with the drive priced in. The sweet spot: brakes, batteries, alternators, starters, sensors, belts, hoses, plugs, coils, and pre-purchase inspections — high book-time jobs with driveways as the venue.
Parts: order customer-paid parts to the VIN in advance — a no-show then strands THEIR money, not yours — or sell from your stock with the 20–30% markup shown openly; the markup is standard industry practice and it funds the warranty risk you carry. Warranty: offer 12 months / 12,000 miles parts-and-labor in writing — it is the trust unlock that replaces the shop’s waiting room and coffee machine, and on quality parts the actual callback rate is low enough that the markup covers it. Insurance is the non-negotiable: garage liability for damage you cause, and garagekeepers coverage any time a customer’s vehicle is in your care, custody, or control — one driveway incident without it ends the business. The last piece is the paper trail: invoice with book hours, parts numbers, and the warranty terms printed — professional documentation is what separates a mobile mechanic from a guy with tools.