Powerful. Practical. Efficient. Challenger's versatile engine lineup doesn't just uphold its legendary performance reputation — it takes it to an entirely new level.

The 6.1-liter SRT® HEMI® V8 is the highest naturally aspirated specific-output engine ever offered in a Challenger. It features:

• Performance-oriented camshaft profiles
• Aggressively designed cylinder heads and intake and exhaust systems to help maximize airflow and increase engine speed

The 5.7-liter HEMI® V8 available with Multi-Displacement System (MDS) delivers:

• Variable Cam Timing, bringing more power and optimal performance
• Greater efficiency when equipped with MDS
• Dual ignition (two spark plugs per cylinder) to increase peak power and torque
• With the 5.7-liter HEMI®^en_own_hemi, Challenger R/T has 57 more horsepower and gets better highway fuel economy than Mustang GT^{en_epa_2009_rwd_57L}

The 3.5-liter High-Output SOHC V6 engine offers:

• Consistent speed and reduced emissions with a dual-tuned intake manifold and a sophisticated electronic throttle control system
• Tailored pedal-movement response based on operating conditions
• Even with a smaller V6 engine, Challenger SE has a 40-horsepower advantage over Mustang V6^{en_based_manf_challenger}