Tow Bar for Mazda 3 — Cost, Fitting & What You Need to Know

Choosing the right towbar for your Mazda 3

When choosing a tow bar for your Mazda 3, there are three things to consider: the towbar class, the wiring kit, and whether you need OEM (manufacturer) or aftermarket. For most Mazda 3 owners, an aftermarket Class 2 Light Duty from a reputable brand like Hayman Reese, TAG or Treg is the better choice — it costs 30–50% less than the OEM option, comes with the same compliance plate, and performs identically.

OEM towbars from the dealer are typically painted to match the bumper and have a slightly cleaner finish, but they cost more for what is essentially the same engineering. Aftermarket Class 3 and Class 4 towbars are tested to AS 4177 and rated to the same towing capacities.

For wiring, you have two main options: 7-pin flat (the Australian standard for most caravans and trailers) or 13-pin (used on most European vehicles and increasingly on EVs). If you're not sure which you need, 7-pin flat is the safe default — it works with the vast majority of Australian trailers, caravans and bike carriers.

One thing to watch for on this specific model: the rear bumper usually needs to come off for the towbar to be installed cleanly, which is why fitting takes 2–3 hours. Don't be tempted by quotes that promise a 60-minute fit — proper installation requires bumper removal and torque-checked bolts. If you're planning to tow a caravan with electric brakes, ask your installer to include a brake controller in the quote — expect to add $250–$400 for a quality unit like a Redarc Tow-Pro.