Parts for your 2019 Audi Q5-Ignition coils

2019 Audi Q5 ignition coils — what they do and when to replace

Based on Audi technical literature, ignition coils are fitted to 2019 Audi Q5 petrol (TFSI) and SQ5 models, but not to the diesel (TDI) variants. Audi’s erWin/ELSA workshop information for the FY-platform Q5 (2018–2020), the Audi Self‑Study Program on the EA888 Gen.3B 2.0 TFSI, and ETKA parts listings (e.g., coil part numbers in the 06K 905 110 family) confirm a coil‑on‑plug setup for TFSI engines. By contrast, 2.0 TDI and 3.0 TDI engines use compression ignition with glow plugs, so no ignition coils are used.

For 2019 Q5 petrol and SQ5 owners, the ignition coils are the small but mighty components that transform the 12‑volt battery supply into the high voltage needed to fire the spark plugs. Each cylinder gets its own coil-on-plug unit for precise control, cleaner running, and efficient cold starts. When they’re happy, the engine feels smooth and punchy, when they’re tired, it can feel flat, lumpy, and thirsty.

There’s no fixed replacement interval for coils on the 2019 Q5, they’re generally replaced on condition. Many owners choose to renew coils when chasing misfires or alongside fresh spark plugs to keep everything in sync. Typical warning signs include:

• Rough idle, hesitation under load, or poor fuel economy
• Check Engine Light with misfire codes (e.g., P0300–P0304)
• Hard starts or a noticeable stumble on cold mornings

Good servicing habits make a difference. Keep moisture out of the plug wells, don’t blast the engine bay with water, and ensure the rocker cover gasket isn’t weeping oil into the coil area. When replacing spark plugs (often around 60,000 km on the EA888 Gen.3B), inspect coil boots for cracking and carbon tracking. If one coil fails on a higher‑kilometre car, it’s sensible to replace the full set to avoid repeat visits. Always seat coils firmly with a clean click onto the plugs, and use the proper puller tool if removal is tight to avoid damaging the housing.

Quality matters here: stick with genuine or reputable OEM‑equivalent coils that match the Audi part specification for the engine code. After installation, clear fault codes and road test—misfires should be gone, idle stable, and throttle response crisp. A healthy set of coils keeps the 2019 Q5’s TFSI or SQ5 V6 feeling lively and reliable on Aussie and Kiwi roads.

Popular questions about 2019 Audi Q5 ignition coils

How long do ignition coils typically last on a 2019 Q5?
On TFSI models, coils often run well past 100,000 km, but heat cycles, engine bay moisture, and plug condition all play a role. Many owners see intermittent misfires as the first clue one is getting weak. Checking them when you do spark plugs is a smart move.

Can the car be driven with a failing coil?
It’ll usually run, but it’s not recommended. Driving with a misfire can overheat the catalytic converter and wash fuel into the oil. If the engine stumbles or the light flashes, ease off and get the coil diagnosed and replaced promptly.

Should coils be replaced with spark plugs?
Not mandatory, but convenient. If the vehicle has higher kilometres or shows any misfire history, replacing coils with the plugs can save labour and prevent a return visit. At minimum, inspect and refit them carefully when doing plugs.