Best Spark Plugs for Suzuki Swift Sport – All Generations

Installing the wrong spark plugs in your Suzuki Swift Sport can lead to poor performance or possibly even engine damage. To help you find the right spark plugs we have put together a quick quite on the correct plugs and when to change them.

What are the Signs of a Bad Spark Plug in a Suzuki Swift Sport?

Reduced fuel economy – If you notice that you are making more frequent trips to the petrol station it may be a sign that the spark plugs in your Swift Sport are dirty or fouled.

Rough starts – Do you find that you have difficulty starting your Suzuki Swift Sport or it simply won’t start at all. If the spark plugs have gone bad and can’t produce a spark you won’t be going anywhere in your Swift Sport.

Reduced acceleration – If your Swift Sport feels slower than it used to it may be down to the spark plugs. Dirty or fouled spark plugs can lead to a poor-quality spark, which will lead to reduced performance from the engine in your Swift.

Rough Idle – While rough idle can be caused by a whole load of different issues, bad spark plugs are often a common culprit.

Misfires – If your Swift Sport is misfiring it could be a sign that you need to replace the spark plugs.

Best Spark Plugs for a Swift Sport

We have included information on all the generations of the Suzuki Swift Sport up to the third gen model (current version). Depending on what generation/model Suzuki Swift Sport you have, the recommendation for the best spark plug is different.

ZC31S Swift Sport (Generation 1) – M16A Engine

ZC32S Swift Sport (Generation 2) – M16A Engine

ZC33S Swift Sport (Generation 3) – K14C Engine

Other Things to Check

While you are replacing the spark plugs it is a good idea to check the spark plug wires to make sure they are in good condition. You should also closely inspect your old spark plugs as they can tell you quite a lot of information about the health of the engine inside your Swift Sport. To find out more about this check out this spark plug analysis guide.

When to Change the Spark Plugs on a Suzuki Swift Sport

Suzuki recommends replacing the spark plugs every 50,000 – 60,000 km (31,000 – 36,000 miles) or every 48 months if iridium plugs are installed. If you find that your Swift Sport is running rough or is down on power, it is a good idea to change the spark plugs even if you have not reached the service interval. If the problem persists you know it is probably not the spark plugs but something else.

If you are looking to buy a Mk1 or 2 Swift Sport (ZC31S or ZC32S) make sure you check out our buyer’s guide here.


  • Ben

    From his early days playing the original Gran Turismo and with his Hot Wheels car set, Ben has had a long interest in all things automotive. His first foray into the world of automotive journalism was way back in 2009 and since then he has only grown more interested in the industry. Ben also runs and heads up the video production side of Garage Dreams, focusing on small informative documentaries about some of the world's most legendary cars.

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