When evaluating a Buggy Car, focus on the engine displacement (cc) or motor power (kW) for electric models. For gasoline buggies, ensure the engine is a reputable brand (e.g., Loncin or Zongshen) for reliability. Key mechanical specs include independent suspension systems (Double A-Arm), hydraulic disc brakes for safety, and high-torque CVT transmissions. Always verify the chassis material, prioritizing high-strength tubular steel with professional welding to ensure structural integrity during off-road use.