Does a Dodge Avenger have spark plugs?

Yes. All gasoline-powered Dodge Avengers use spark plugs; the number depends on the engine, with four cylinders typically using four plugs and six-cylinder variants using six plugs.

Across its production, the Avenger came with different engines—most notably a 2.4-liter four-cylinder and one or more V6 options. Regardless of year, spark plugs are essential components of the ignition system and will need periodic replacement.

Engine options and spark plug counts

Different Avenger generations used different engines, but the spark plug setup follows the number of cylinders. Here is a quick breakdown by typical configurations in common model years.

2.4-liter inline-4 engine (4 cylinders)

Typical layout: one spark plug per cylinder, usually four spark plugs total. This engine is common in 2007–2014 Avengers and in some earlier Sebring/Avenger variants. Replacement intervals and plug type vary (often platinum or iridium in newer designs) based on model year and maintenance schedule.

• Number of spark plugs: 4


• Common plug types: platinum-iridium in modern designs; copper in older units


• Typical replacement interval: roughly every 60,000–100,000 miles, depending on plug type and driving conditions

In summary for this engine: four plugs, with replacement timing depending on plug type and driving conditions. Always refer to the owner's manual for the exact interval.

3.5-liter V6 engine (6 cylinders)

V6 variants use one spark plug per cylinder, totaling six plugs. This engine was available in some Dodge Avenger trims in the late 2000s and early 2010s.

• Number of spark plugs: 6


• Common plug types: similar to 4-cylinder cases (platinum/iridium or copper)


• Typical replacement interval: generally 100,000 miles for long-life plugs; copper may require earlier changes, around 60,000–100,000 miles depending on the plug

End note: Always check the exact engine option in your specific car's VIN or owner manual to confirm plug type and replacement intervals.

Maintenance considerations and tips

Regular inspection of ignition components, wires, and coil packs is important. If you notice misfiring, rough idle, decreased fuel economy, or trouble starting, it might be time to inspect or replace spark plugs and related ignition parts.

• Inspect spark plug wires or coils for wear


• Use the correct heat range and type of plug specified by the manufacturer


• Consider professional service if you are not familiar with spark plug replacement

Regular maintenance ensures reliable ignition performance and preserves engine efficiency. Always consult the owner’s manual and a trusted mechanic for model-specific guidance.

Summary

The Dodge Avenger does have spark plugs. The number depends on the engine: four for the four-cylinder 2.4L variant, six for the V6 variants. Replacement intervals depend on plug type and driving conditions, typically ranging from 60,000 to 100,000 miles, and owners should follow the specific recommendations in their manual.

Conclusion: Spark plugs are a standard part of the Avenger's ignition system across its different engines, and proper maintenance helps keep the car running smoothly.

What are the symptoms of a bad spark plug?

Symptoms of using the wrong spark plug include engine misfires, rough idling, poor acceleration, decreased fuel economy, and difficulty starting the engine. A flashing or steady "Check Engine" light can also indicate a problem, as the engine's computer detects suboptimal combustion. 
Performance issues

• Engine misfires: A sudden loss of power or a stuttering, jerking sensation, especially when accelerating. 
• Rough idling: The engine shakes or vibrates when the car is stopped, instead of running smoothly. 
• Poor acceleration: The car feels sluggish and doesn't respond quickly when you press the gas pedal. 
• Engine knocking or pinging: Unusual sounds from the engine can indicate improper combustion. 

Fuel and starting problems

• Decreased fuel economy: Your vehicle uses more gas than usual due to inefficient combustion. 
• Difficulty starting: The engine cranks longer than normal or struggles to start, particularly in cold weather. 

Diagnostic indicators

• "Check Engine" light: The light may come on, sometimes flashing, which signals that the engine control module has detected a problem with combustion. 

What is the common problem of Dodge Avenger?

Common Dodge Avenger problems include issues with the automatic transmission, engine stalling, and the engine not starting. Other frequent complaints involve a faulty alternator, electrical problems from a defective TIPM (Totally Integrated Power Module), and the heater not working correctly. Problems can also occur with the independent rear suspension, brakes, and cabin components like the AC.
 
This video explains common problems with the Dodge Avenger and how they can be diagnosed: 56sSimple Mechanic AdviceYouTube · Nov 3, 2024
Engine and starting problems

• Engine stalling and not starting: This can be caused by a failed alternator, faulty starter, a dead battery, or issues with the engine control module (ECM). 
• Engine overheating: A faulty thermostat, radiator fan, or coolant leak can cause the engine to overheat. 
• Engine failure: In some cases, the engine may fail due to a faulty PCM (Powertrain Control Module).
• Misfires: Worn spark plug tube seals can cause misfires, poor fuel economy, and rough running. 

Transmission issues

• Erratic shifting: The automatic transmission may have problems with rough or erratic shifting. 
• Stuck in gear: The transmission can get stuck in a lower gear. 
• Delayed engagement: Delayed shifting, especially between park, drive, and reverse, can occur due to internal component wear or control system issues. 

Electrical and other systems

• Faulty TIPM: A defective TIPM is a known cause of various electrical problems, such as the engine not starting or stalling, dimming lights, and the battery light coming on.
• Alternator failure: The alternator can fail, leading to dimming lights, slow cranking, and a dead battery.
• Electrical issues: Other electrical problems may include the radio and remote keyless entry not working correctly.
• Knocking AC compressor: Owners sometimes report a knocking noise coming from the AC compressor.
• Wet carpet: A clogged evaporator drain can lead to wet carpets inside the car. 

Suspension and brakes 

• Faulty rear suspension: The independent rear suspension, with its multiple links and bushings, is prone to failure. It is recommended to inspect and replace these components if necessary. 
• Squeaking brakes: Squealing brakes are a common complaint reported by owners. 

Interior and body

• Heater failure: The heater core is a weak point and can plug up, resulting in heat only on one side of the car.
• Interior wear: The plastic trim inside the cabin may break, and the edges of seats can show wear.
• Chrome peeling: The chrome on interior door handles can peel, becoming a potential hazard if the edges are sharp. 

This video discusses the rear suspension and heater problems in the Dodge Avenger: 58sAutoMotivateYouTube · Sep 17, 2020

Does a 2014 Dodge Avenger have spark plugs?

There is one 2014 Dodge Avenger spark plug for each engine cylinder, and this part is responsible for kickstarting combustion in each of the cylinders to power the car.

How many spark plugs does a Dodge Avenger have?

4 Spark Plugs
2009-2014 Dodge Avenger 2.4L L4 EDG. GENUINE NGK SPARK PLUGS . 4 Spark Plugs.