Torque Precision Auto Business Plan — How a Workshop Actually Makes Money

A workshop sells book hours and buys clock hours. Profit is the product of bay utilisation, efficiency against book time and the rate actually collected.

How a Workshop Actually Makes Money

Jump to section
On this page

  • 3.1 The three ratios in this plan
  • 3.2 Labour, parts and sundries

South African workshops quote from standardised repair-time databases, so a job carries a book time regardless of how long the individual technician takes. A technician who consistently beats book time is described as running above 100 per cent efficiency, and is the most valuable asset in the building. The three ratios compound: a workshop at 70 per cent utilisation and 95 per cent efficiency invoices two-thirds of the hours it pays for, while one at 81 per cent and 110 per cent invoices nearly nine-tenths.

Clock hours paid against book hours invoiced
Figure 8. Clock hours paid against book hours invoiced.

3.1 The three ratios in this plan

Ratio

Year 1

Year 5

What drives it

Bay utilisation

46%

81%

Booked work in the diary. A function of marketing, reputation and fleet contracts, not of technician skill

Efficiency against book time

90%

110%

Technician experience, tooling, parts availability at the bay and workshop layout

Effective labour rate

R739

R739

Posted rate less discounting, goodwill adjustments and rework. Managed by the service manager, not the price list

Book hours sold as a share of clock hours paid

41%

89%

The three ratios compounded. This is the number that decides whether the workshop makes money

Year 1

Year 2

Year 3

Year 4

Year 5

Bays

4

6

8

9

10

Clock hours paid at 1 960 a bay

7 840

11 760

15 680

17 640

19 600

Bay utilisation

46%

63%

73%

78%

81%

Efficiency against book time

90%

98%

104%

108%

110%

Book hours invoiced

3 245

7 260

11 904

14 859

17 463

Book hours as a share of clock hours

41.4%

61.7%

75.9%

84.2%

89.1%

Effective labour rate, R

739

739

739

739

739

Labour revenue, R

2 400 000

5 368 000

8 801 000

10 987 000

12 912 000

In Year 1 the workshop pays for 7 840 clock hours and invoices 3 245 book hours. By Year 5 it pays for 19 600 and invoices 17 463. The gap closes through utilisation and efficiency, not through additional technicians — which is why the plan slows bay expansion behind demonstrated utilisation rather than ahead of it.

3.2 Labour, parts and sundries

Year 5 revenue and gross profit by stream
Figure 9. Year 5 revenue and gross profit by stream.

Year 5

Revenue (R)

Gross profit (R)

Gross margin

Share of gross profit

Labour

12 912 000

8 521 920

66%

66%

Parts

14 719 000

3 974 130

27%

31%

Sundries and consumables

803 000

491 950

61%

4%

Total

28 434 000

12 988 000

45.7%

100%

Parts revenue of R14.72 million generates R3.97 million of gross profit; labour revenue of R12.91 million generates R8.52 million. The parts business exists to support the labour business, and parts attachment is measured as a ratio to labour rather than as a target in its own right — 1.14 at Year 5.

Discount leakage is invisible on the price list
Figure 10. Discount leakage is invisible on the price list.