Mobile mechanic — trip economics

Trips + driving + downtime → real margin of on-site repair

Input

Trips/day

km per trip (round)

Cost per km, UAH

Call-out fee, UAH

Work revenue/trip, UAH

Work margin %

Work hours/trip

Drive min/trip

Economics

driving: 36% of day

4 600 ₴/day

Fuel/day: −560 ₴
Working day: 9,3 h
Profit/day-hour: 493 ₴

The main enemy of mobile service is unproductive drive time. Count the 'wheel-hour': revenue ÷ (work + drive). If driving exceeds 30% of the day — raise the call-out fee or cluster trips by district.