The 2015 Grand Cherokee offered multiple engine choices: a 3.6-liter V6, a 5.7-liter Hemi V8, and a 3.0-liter EcoDiesel V6, with the high-performance SRT model adding a 6.4-liter Hemi V8.
Across the lineup, these engines are paired with an eight-speed automatic transmission, and horsepower/torque vary by trim. The article below breaks down each option with typical specs and notes on availability by model year and trim for buyers researching the SUV.
Engine options by powertrain
Engine options are spread across the lineup, with several engines available depending on trim and market. The following options summarize the main powertrain choices for 2015 Grand Cherokee models.
- 3.6-liter Pentastar V6 — about 290 horsepower and 260 lb-ft of torque; available on most trims; paired with an eight-speed automatic transmission.
- 5.7-liter Hemi V8 — about 360 horsepower and 390 lb-ft of torque; available on higher trims; paired with an eight-speed automatic transmission.
- 3.0-liter EcoDiesel V6 — about 240 horsepower and 420 lb-ft of torque; available on select trims (Limited/Overland/Summit); paired with an eight-speed automatic transmission.
- 6.4-liter Hemi V8 (SRT only) — about 470 horsepower and 470 lb-ft of torque; available on the high-performance Grand Cherokee SRT; paired with an eight-speed automatic transmission.
In short, the 2015 Grand Cherokee offered a choice among efficient diesel, balanced gasoline V6, louder V8 options, and a dedicated high-performance V8 for the SRT variant, allowing buyers to tailor power and efficiency to their needs.
Performance and transmission
Across the model lineup, the engines are paired with an eight-speed automatic transmission, providing smooth shifts and strong torque delivery. The SRT variant, while built for high performance, still relies on the same eight-speed setup, tuned for quicker shifts and rapid acceleration.
What this means for buyers
Prospective buyers can consider fuel economy, towing needs, and desired performance when choosing an engine. The EcoDiesel offers strong low-end torque and better highway efficiency, the 3.6L V6 is a balanced everyday engine, the 5.7L Hemi adds gusto for towing and acceleration, and the SRT’s 6.4L Hemi delivers outright power for enthusiasts.
Summary
For 2015, the Jeep Grand Cherokee's engine lineup spanned four main options: 3.6L V6, 5.7L V8, 3.0L EcoDiesel V6, and the 6.4L Hemi V8 used in the SRT. All engines were paired with an eight-speed automatic transmission, offering a broad range of power, torque, and efficiency to match different trims and driver preferences.