Do Dodge Chargers have spark plugs?
Gasoline Dodge Chargers use spark plugs, while the diesel variant relies on glow plugs. As of the latest available information, the Charger nameplate has been discontinued for new models after the 2023 model year, and there is no current all-electric Charger in production.
Ignition systems in Dodge Chargers
The Chargers sold in recent years used several gasoline engines with traditional spark-ignition, and a diesel option existed in some generations. This section breaks down which engines use spark plugs and which (if any) use glow plugs.
Gasoline engines
Gasoline Chargers employ spark plugs—one per cylinder—paired with a modern ignition system (typically coil-on-plug). The following engines are commonly associated with the Charger lineup and use spark plugs:
- 3.6L Pentastar V6 (gasoline) — 6 spark plugs
- 5.7L Hemi V8 (gasoline) — 8 spark plugs
- 6.2L Hemi V8 (Hellcat/Redeye) — 8 spark plugs
- 6.4L Hemi V8 (Scat Pack variants) — 8 spark plugs
In gasoline Chargers, spark plugs are a routine maintenance item, with replacement intervals recommended by the manufacturer and typically ranging across tens of thousands of miles depending on the engine and driving conditions.
Diesel option
The Dodge Charger line previously offered a diesel option in the form of the 3.0L EcoDiesel V6. Diesel engines do not use spark plugs; they rely on glow plugs to preheat the combustion chamber for starting and cold-weather operation.
- 3.0L EcoDiesel V6 (diesel) — glow plugs (no spark plugs)
Glow plugs are standard on diesel engines to assist ignition through preheating, rather than producing a spark.
Current status of the Charger lineup
Dodge announced that Charger production would end after the 2023 model year, and there has been no new Charger in production since then. While Dodge has teased electrified future concepts and muscle-car branding, there is no direct, current Charger model that uses a gasoline- or electric-only drivetrain as of 2025. The ignition details above reflect historical configurations from the model’s gasoline and diesel variants.
Summary
Bottom line: If you own or are considering a Dodge Charger with a gasoline engine, it will have spark plugs (one per cylinder). If you instead have or are researching the EcoDiesel variant, that engine uses glow plugs. Additionally, the Charger’s production has ceased for new models as of 2023, with no current electric Charger in production.
