Safety Features to Confirm Before Finalising a Used Car Purchase

Why Safety System Verification Matters for Used Car Buyers

Used cars increasingly come equipped with advanced driver-assistance systems (ADAS) — technologies designed to detect hazards, alert drivers, and in some cases apply brakes or steering automatically. For older drivers, these features can genuinely reduce crash risk. But unlike mechanical components, ADAS can appear intact while being partially or fully non-functional.

A prior fender-bender, an uncalibrated radar sensor, or an improperly replaced windshield can quietly disable the very systems you're counting on. That's why a targeted safety-feature audit should be part of every used car evaluation — separate from the broader mechanical inspection.

See our guide to used car inspection preparation for what to bring and ask before you even arrive at the vehicle. This checklist picks up where that preparation ends — focusing specifically on safety technology.

Tools and Resources to Bring

You don't need specialist equipment to work through most of this checklist, but a few resources will help you verify claims and identify gaps.

The Safety Feature Verification Checklist

Work through the groups below in order. Tick each item only after you've confirmed it yourself — not based solely on the seller's assurances. When in doubt about any electronic system, request a pre-purchase inspection by a qualified mechanic with ADAS diagnostic capability.

Once you've worked through this checklist, pair it with the broader pre-purchase checklist for seniors buying an affordable used car to cover condition, history, and value before you sign anything.

What to Do If a System Is Missing or Faulty

If a safety system is absent from the vehicle, consider whether it can be added as an aftermarket accessory — but proceed cautiously. Not all add-on devices match the reliability of factory-installed systems. Before fitting anything, review what to verify before adding any safety accessory to your vehicle.

If a system is present but malfunctioning, get a written repair estimate before proceeding. Factor that cost into any price negotiation. For systems that cannot be economically repaired, weigh whether the vehicle still meets your safety needs — or whether a different vehicle is the wiser choice.

Once you've taken ownership, getting the most from your car's safety systems day to day will help you use what's installed to its full potential.

This article provides general educational information for used car buyers. It is not a substitute for a professional mechanical inspection or personalised advice from a qualified automotive technician. Safety system behaviour varies by manufacturer and model year; consult the vehicle's owner manual and, where appropriate, a franchise dealer for model-specific guidance.