Parts for your 2016 Audi Q5-Ignition coils

2016 Audi Q5 ignition coils — what they do and when to replace them

Based on Audi factory repair information (erWin) and the Bentley Repair Manual for A4/A5/Q5 (2009–2016), the 2016 Audi Q5 with petrol TFSI engines is fitted with one “pencil” ignition coil per cylinder. The VW/Audi ETKA parts catalogue also lists individual coils for these engines. By contrast, Q5 TDI diesel variants don’t use ignition coils at all, as Bosch and NGK technical references note, diesels rely on compression ignition and glow plugs, not spark. So, ignition coils are relevant for 2016 Q5 petrol models, but not for diesel models.

On the petrol Q5, each ignition coil transforms the 12-volt supply into a high-voltage spark at the plug, precisely timed by the ECU. Good coils mean smooth starts, crisp throttle response, better fuel economy and fewer misfires. When a coil starts to go, the driver may notice a rough idle, hesitation on take-off, increased fuel use, or a flashing check-engine light with misfire codes (P0300–P030X). Left too long, persistent misfires can damage the catalytic converter.

Ignition coils aren’t a regular “every-X-kilometres” service item, they’re replaced on condition. Many techs across Australia and New Zealand will test and replace the single faulty coil when a misfire pops up, though some owners choose to renew the full set once the vehicle clocks higher mileage or when changing spark plugs to keep things even. Using quality OEM-spec coils (Bosch, Beru, NGK) helps avoid repeat issues.

Servicing tips for a 2016 Q5 petrol:

• Scan for fault codes and note which cylinder is misfiring before diving in.
• Under the bonnet, remove the engine cover, unplug the connector and pull the coil straight up, a proper puller makes life easier.
• Inspect the spark plug and tube for oil or water, address leaks and avoid washing the engine when hot.
• Install coils as per Audi guidance (most late-model coils go in dry—no grease—unless specified). Refit connectors until they click.
• If misfires keep returning, replace the spark plugs and check for intake or vacuum issues.

For diesel Q5 owners: your vehicle doesn’t have ignition coils. It uses glow plugs for cold starts and compression ignition for running, so any “hard start” or rough running on a TDI points elsewhere—think glow plugs, fuel delivery, or air leaks rather than coils.

Popular questions

How long do ignition coils last on a 2016 Audi Q5?
There’s no fixed lifespan, but many coils run well past 100,000 km. Heat and vibration are the main enemies, so vehicles used in hot climates or lots of stop–start may see earlier failures. Replace on condition—when misfire codes point to a coil—or consider a matched set if issues are recurring.

Is it safe to drive with a faulty coil?
Not ideal. A short trip to a workshop is usually fine, but extended driving with a misfire can overheat and damage the catalytic converter, waste fuel and reduce performance. Sort it promptly to avoid bigger bills.

Do diesel 2016 Q5 models have ignition coils?
No. TDI variants don’t use coils, they use glow plugs and compression ignition. If a diesel Q5 is hard to start or runs rough, checking glow plugs, fuel system and air leaks is the better path.