The 2011 Buick Regal uses four spark plugs in total. Both of its four‑cylinder engine options—the 2.4L Ecotec and the 2.0L turbo—have four cylinders, and each cylinder houses one spark plug.
Engine options in the 2011 Buick Regal
For the 2011 Regal, buyers could choose between two four-cylinder powerplants. Understanding these options helps explain why the spark plug count remains consistent across trim levels.
- 2.4-liter Ecotec inline-4 (naturally aspirated)
- 2.0-liter turbocharged inline-4
In short, regardless of the engine choice, the Regal’s engine bay houses four spark plugs in total.
Spark plug counts by engine
The following counts apply to the two four-cylinder engines offered in the 2011 Regal.
- 2.4 L Ecotec I4 — 4 spark plugs (one per cylinder)
- 2.0 L turbocharged I4 — 4 spark plugs (one per cylinder)
Note: There are no V6 or V8 options for the 2011 Regal, so spark plug count remains four across all variants.
Summary
For a 2011 Buick Regal, expect four spark plugs in total. This holds true whether you drive the base 2.4-liter model or the turbocharged 2.0-liter variant.