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Public Liability Insurance for Mechanics: What Does It Cover?

Published 8 July 20268 min read
Mechanic talking with a customer beside a car in an open workshop

Public liability is the foundation cover for any motor trade business. Here is what it covers, the kinds of incidents it responds to, why the limit you choose matters, and how it fits alongside the rest of your cover.

Quick summary

  • Covers third-party bodily injury and property damage arising from your business activities.
  • Does not cover damage to customer vehicles in your care - that is a separate cover called garage keepers liability.
  • Most workshop leases, trade licences, and dealership contracts require a minimum level of public liability cover.
  • Products liability is often included and responds to claims from parts you supplied or fitted after the job is done.
  • The limit of indemnity you choose matters - too low and you may be personally exposed if a claim exceeds it.
  • Pairing public liability with garage keepers liability covers the two most common loss scenarios for a mechanic.

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What public liability actually covers

Public liability insurance covers your legal liability when your business activities cause bodily injury to a member of the public, or damage to their property. It responds to third-party claims, meaning claims made against you by someone outside your business, not by your employees and not for damage to vehicles in your care.

For a mechanic, that third-party exposure exists everywhere. A customer visiting your workshop, a supplier delivering parts, a passer-by near an offsite job, a neighbouring business whose property is affected by something that happens in your workshop, all of them are third parties. When a claim lands, public liability is generally what responds to the compensation and the legal costs of defending it.

It is also the cover most commonly required before you can sign a lease on a workshop, hold a trade licence, or take on work for a dealership, fleet operator, or local council. Many of these arrangements specify a minimum limit you must hold as a condition of the contract.

Real incidents in a workshop where it responds

The value of public liability is clearest when you look at the kinds of things that actually happen in and around motor trade businesses. These are not hypotheticals. They are the scenarios that mechanics, panel beaters and tyre shops deal with.

  • A customer walks into your workshop to collect their car and slips on oil that has dripped from a vehicle you are working on, fracturing their wrist
  • You are moving a customer's car across the workshop and accidentally roll into a neighbouring vehicle belonging to another customer
  • A wheel you torqued is not seated correctly and comes loose after the customer drives off, causing a collision further down the road
  • A fuel line repair has a small leak, which goes undetected and causes a fire that damages the customer's vehicle and the neighbouring bay
  • A mobile mechanic leaves a jack handle on a driveway while working underneath a car, and the homeowner trips over it returning from the letterbox
  • Brake fluid spilled during a job damages the paintwork on a neighbouring customer's vehicle while you are not looking
  • A part you supplied and fitted as a kit fails prematurely and causes damage to the customer's drivetrain

Public liability does not cover damage to vehicles left in your care. That is handled under garage keeper's liability, a separate cover. If you work on customer vehicles, you generally need both, and the gap between them is one of the most common points of dispute when a claim is made.

Why the limit of indemnity matters more than most people realise

Public liability is arranged with a limit of indemnity, which is the maximum the policy will pay for a single claim including defence costs. Selecting a limit that is too low can leave you exposed to a gap between what the policy pays and what a court awards, and it can also lock you out of contracts that specify a minimum.

Dealerships, government fleet operators, and commercial property landlords frequently require public liability with a limit that reflects their own exposure. A sole trader who has quoted a job with a fleet operator may be turned away at the contract stage if their cover does not meet the required minimum.

At the other end, paying for a limit far beyond what your business reasonably needs is not money well spent. The right level sits at the intersection of your business activities, the contracts you work under, and the potential severity of the worst realistic claim against you.

How products liability fits in

Many public liability policies for mechanics include products liability as part of the cover. This responds to claims arising from a product you supplied or fitted, after it has left your custody, rather than claims arising from your activities on the premises.

The distinction matters for a mechanic who fits parts, sells tyres, or supplies consumables as part of their service. If a brake pad you fitted fails prematurely and causes an accident weeks after the job is done, products liability is what responds to that claim rather than the general premises-based liability cover.

Not all policies treat products liability the same way. Some include it automatically within the main limit, others sub-limit it or exclude certain product categories. It is worth understanding which applies to your cover, particularly if parts supply is a meaningful part of your revenue.

Where public liability fits in your overall cover

Public liability is the foundation, but it is rarely the whole picture for a working workshop. Most mechanics pair it with garage keeper's liability for customer vehicles, tools cover for their equipment, and motor trade road risk if they drive or road-test customer cars.

Thinking of these as a connected set rather than isolated policies is how you avoid the gaps where claims become complicated. We can help you review how yours fit together and where the boundaries sit. Speak to a broker about building the right cover structure for your workshop.

Frequently Asked Questions

It is not usually required by law in most Australian states, though it is strongly recommended and is frequently a condition of trade licences, lease agreements, and contracts with fleet operators or dealerships. Some local councils also require it before work can begin on their premises or fleet.

This guide is general information only and does not take your specific circumstances into account. Mechanics Insurance is an insurance broker. We help you review and arrange cover, we do not underwrite or issue policies. Cover terms, limits and exclusions vary by policy and insurer.

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