A Guide to Spark Plug Replacement for the 2018-2024 Volvo S60
Everything you need to know to keep your S60's advanced engine firing on all cylinders.
- Replace spark plugs every 60,000 miles as recommended by Volvo, or consider 50,000 miles due to the engine's turbocharged nature.
- Stick to OEM-equivalent brands like Bosch, Denso, or NGK for proven quality and reliability.
- This is a straightforward DIY task that can be completed in about an hour with the right tools, saving on labor costs.
- Symptoms like a rough idle, engine misfires, and poor acceleration are strong indicators that your spark plugs need inspection.
Symptoms of Failing Spark Plugs
Worn-out spark plugs can cause noticeable problems with your S60's performance. Because these engines are finely tuned, even a small issue with a spark plug can be felt. Common signs include:
- Rough Idle: Your car may shake or vibrate when you're stopped at a light.
- Engine Misfires: You might feel a stuttering or hesitation from the engine during acceleration. A flashing Check Engine Light is a serious sign of a misfire.
- Reduced Power: The car may feel sluggish and slow to respond when you press the gas pedal.
- Trouble Starting: The engine may take longer than usual to start.
- Worse Gas Mileage: Incomplete combustion from a bad spark plug wastes fuel, forcing you to fill up more often.
- Check Engine Light: A steady Check Engine Light can be triggered by failing plugs, often with codes like P0300 (random misfire) or P0301-P0304 (misfire on a specific cylinder).
A Note on Earlier Models
Volvo issued a service action (S29842) for 2015-2016 models with similar 4-cylinder engines due to spark plugs that could crack. The fix was an improved plug design, which is expected to be standard in the 2018-2024 models. 🎬 Watch: A complete overview of spark plug replacement for VEA engines. This highlights the importance of using high-quality, correctly specified plugs in these engines.
Choosing the Right Aftermarket Spark Plugs
Volvo does not manufacture its own spark plugs. Instead, it uses parts from established OEM (Original Equipment Manufacturer) suppliers like Bosch, Denso, and NGK. This means you can get the same quality as a "Genuine Volvo" part by buying from one of these trusted brands.
- Top Tier (OEM Equivalent): Bosch, Denso, and NGK are the go-to choices. They are often the original suppliers to Volvo. Choosing an Iridium plug from one of these brands ensures you get a part that meets or exceeds the factory specifications for performance and longevity.
- Aftermarket Quality: For a vehicle as sophisticated as the S60, it is not recommended to use lesser-known or budget brands. The potential for misfires, poor performance, and even engine damage outweighs the small cost savings. Stick with the proven OEM suppliers.
Always Check the Gap
Most high-quality Iridium spark plugs for your S60 come pre-gapped. However, it's a professional habit to always double-check the gap with a feeler gauge before installation. This simple step ensures the plug is perfectly set for your engine and prevents issues down the road.
Replacement Cost Comparison
Replacing spark plugs is a routine maintenance item. The cost is reasonable, especially if you do it yourself. The prices below are for a set of four plugs.
| Part Type | Estimated Cost |
|---|---|
| New OEM (Genuine Volvo) | $90 - $115 |
| New Aftermarket (Bosch, Denso, NGK) | $70 - $130 |
| Shop Labor | $100 - $200 |
Frequently Asked Questions (FAQ)
When should I replace the spark plugs on my S60?
Volvo's official maintenance schedule recommends replacing the spark plugs every 60,000 miles. Some independent specialists suggest a slightly earlier interval of 50,000 miles because the turbocharged engines put more stress on the plugs.
Is replacing the spark plugs a DIY job?
Yes, this is a very DIY-friendly job for a moderately handy owner. The spark plugs are easily accessible after removing the top engine cover. You will need a few specific tools, including a T40 Torx bit, an 8mm socket, and a thin-walled 14mm spark plug socket. The entire job can typically be done in about an hour.
🎬 See how easy this DIY spark plug replacement is.Should I replace the ignition coils at the same time?
It is not necessary to replace the ignition coils with the spark plugs unless one is failing. Coils are much more expensive than plugs. If you have a misfire code for a specific cylinder, a common diagnostic step is to swap that cylinder's coil with another to see if the misfire follows the coil. 🎬 Watch: How to diagnose a misfire and swap ignition coils. If it does, the coil is bad and should be replaced.
What happens if I don't replace my spark plugs?
Ignoring worn spark plugs will lead to worsening symptoms like rough running, poor acceleration, and bad fuel economy. Most importantly, persistent engine misfires can allow unburned fuel to enter the exhaust, which can quickly damage the expensive catalytic converter.
Helpful Videos
Technical Specifications
OEM Part Numbers: 32290011 31673604 31380014
Material: Iridium. Required Socket: Special deep, thin-walled 14mm spark plug socket. Torque Spec: 18 Nm or 13 ft-lbs.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Volvo S60: