On a 2014 Cruze, replacement intervals depend on plug type: iridium or platinum plugs typically last about 100,000 miles, while copper plugs are usually 60,000 miles. Always check your owner's manual for the exact specification for your engine and plug choice.
This article explains the factors that influence the schedule, including the two engines offered that year (1.8L and 1.4L turbo), the rationale behind long-life plugs, signs of wear, and practical tips for replacement, whether you DIY or hire a pro.
Engine options in the 2014 Cruze
In 2014, Chevrolet offered two four-cylinder engines in the Cruze: a 1.8-liter naturally aspirated unit and a 1.4-liter turbo. Spark plug design and replacement intervals can vary by engine family, but modern long-life plugs (iridium or platinum) are commonly specified for both, with a typical replacement target around 100,000 miles when using OEM-type plugs. Copper plugs, if used, generally require earlier changes around 60,000 miles.
Recommended replacement intervals
These figures reflect typical factory and aftermarket guidance for the 2014 Cruze. They assume standard driving conditions and proper plug type as specified by GM for your engine.
- Iridium or platinum plugs: about 100,000 miles (160,000 km)
- Copper plugs: about 60,000 miles (96,000 km)
- Severe driving conditions or non-OEM plugs may require earlier changes; always follow GM's manual and plug manufacturer guidelines
Bottom line: For most 2014 Cruze owners, using long-life iridium/platinum plugs makes it practical to plan a change around the 100,000-mile mark, while copper plugs will generally need replacement sooner, around 60,000 miles.
Signs your spark plugs need changing
Look for symptoms that the ignition components are wearing out. Early detection can prevent misfires and fuel economy loss.
- Rough idle or engine misfires, especially under load
- Hard starting or slow engine response
- Decreased fuel economy and reduced acceleration
- Engine hesitation, stumble, or loss of power during acceleration
- Check Engine Light may illuminate with misfire-related codes
- Visible wear or damage when inspecting accessible spark plugs or coil packs
If you notice any of these signs, inspect the plugs and consider replacement or professional diagnosis to avoid further engine trouble.
Replacement tips for DIYers
For those planning to replace spark plugs themselves, here are basic guidelines. Always defer to GM's service manual for torque specs and sequence for the 2014 Cruze's engine. If you're not comfortable performing the work, a certified technician can do it quickly and accurately.
- Obtain the correct spark plugs for your engine (iridium/platinum for long life or copper if you intend to replace soon).
- Disconnect the negative battery terminal to prevent shock or shorts.
- Access the spark plugs by removing the coil packs or ignition boots as required by your engine. Some engines have a coil-on-plug arrangement.
- Carefully remove the old plug, check the electrode and seating for wear, and inspect the coil boot for damage.
- Install the new plug with the correct gap (for many modern plugs, the gap is pre-set; if not, gap to the OEM specification).
- Torque the plug to the GM specification using the appropriate tool and spark plug socket. Reinstall coil packs/boots and reconnect wiring.
- Reconnect the battery, start the engine, and check for smooth operation and any error codes.
Summary
For a 2014 Chevy Cruze, your spark plug replacement interval largely hinges on plug type. Long-life iridium or platinum plugs are commonly recommended to be replaced around 100,000 miles, whereas copper plugs typically require about 60,000 miles. Under harsh driving conditions or with non-OEM plugs, plan for earlier changes. Monitor signs of wear, and consult your owner's manual or a qualified technician if you’re unsure. Regular maintenance helps keep the Cruze running smoothly and efficiently.
What brand of spark plugs does Chevy use?
ACDELCO GM OE IRIDIUM SPARK PLUGS.
How long do spark plugs last on a Chevy Cruze?
EVERY 60,000 MILES
The 60,000-mile mark is time for you to come in to have your spark plugs replaced and your ignition coil boots inspected.
What kills spark plugs quickly?
Pre-ignition can lead to heat building up in the combustion chamber causing the spark plugs to fail. In addition, if the cooling system isn't functioning correctly, it can cause the engine and spark plugs to overheat. This overheating can lead to the spark plug's electrode wearing out faster.
What is the most common problem with a 2014 Chevy Cruze?
Owner Reported Trouble Spots
- Exhaust. Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
- Engine Minor.
- Fuel System/Emissions.
- Climate System.
- Noises/Leaks.
- Transmission Major.
- Engine Cooling.
- Electrical Accessories.