What each car really pays you after drive time, oil, and overhead. Free, no signup.
Overhead is spread across the vehicles you do each month, so your per-car profit falls when volume drops. Drive time counts: an oil change that takes 35 minutes in the driveway but 25 minutes of driving is really a 60-minute job. Estimates for planning only.
In "Your price," enter what you charge per oil change, pick the oil type, and add filter and supplies cost. The oil type dropdown fills the oil cost field with an editable starting point: $28 for full synthetic, $20 for synthetic blend, or $14 for conventional. Once you type your own number, the field locks and stops auto-filling. Next, the "Your time and travel" card takes service minutes per vehicle, round-trip drive minutes, fuel and vehicle wear per car, and how many vehicles you do per day. Then the "Monthly overhead" card takes your fixed monthly costs, like insurance, ads, phone, and disposal fees, plus work days per month. The "Breakdown" card recalculates as you type: price, oil plus filter and supplies, fuel and wear, overhead per vehicle, and total time with service plus drive. Overhead is spread across every car you do that month, so per-car profit falls when volume drops. The headline number is true profit per vehicle, with profit per hour of actual time under it. The verdict is LOSING MONEY, TIGHT - drive time is eating it, or PRICED RIGHT, and when you are profitable it appends the break-even cars per day that cover overhead.
Example only, not typical earnings. Say you charge $85, use full synthetic at $28, spend $9 on filter and supplies and $6 on fuel and wear, take 35 minutes to service each vehicle plus 25 minutes of driving, do 6 cars a day, and carry $600 a month in overhead over 22 work days.
Direct costs are $28 + $9 + $6 = $43. Overhead per vehicle is $600 / (6 x 22) = $4.55. True profit per vehicle is $85 - $43 - $4.55 = $37.45. The job takes 35 + 25 = 60 minutes, so profit per hour of real time is $37.45 / 1 = $37.45.
That is below the $40 per hour bar, so the verdict reads TIGHT - drive time is eating it. The break-even math: $600 / (22 x $37.45) = 0.73, rounded up to 0.8 cars per day, so about one car a day covers overhead at this price.
**Why does drive time matter so much to my profit?**
Because the tool divides your per-car profit by the total time you commit, service plus drive. A 35-minute service with 25 minutes of driving is really a 60-minute job, so your profit per hour can be low even when the per-car profit looks fine. The verdict reads TIGHT when you clear money per car but make under $40 per hour of real time.
**How does the tool spread my monthly overhead?**
It divides your monthly overhead by the vehicles you do in a month: cars per day times work days per month. At 6 cars a day and 22 work days, $600 of overhead adds $4.55 to each car. Drop to 3 cars a day and it doubles to $9.09, which is why per-car profit falls when volume drops.
**What do the oil type presets do?**
The dropdown sets the oil cost field to $28 for full synthetic, $20 for synthetic blend, or $14 for conventional. These are editable starting points, not fixed values. The moment you type your own number, the field locks and changing the dropdown no longer overwrites it.
**What is the difference between TIGHT and PRICED RIGHT?**
Both mean you make money per car. TIGHT means your profit per hour of real time, including drive time, is under $40, so the fix is tighter routes or a higher price. PRICED RIGHT means you clear $40 or more per hour of real time after all costs.
**What is the break-even cars per day number?**
It is how many cars per day you need to cover monthly overhead at your current profit per car, rounded up to the nearest tenth. It only appears when you are profitable per car, and entering your work days is what makes it show up.