Engine & Performance Engine: 2.5L Inline-4 (DOHC) Horsepower: 175 hp @ 5,600 rpm Torque: 180 lb-ft @ 3,900 rpm Transmission: CVT (Continuously Variable Transmission) Drivetrain: Front-Wheel Drive Fuel Economy: ~23 city / 31 highway MPG (26 combined) 0–60 mph: ~8.5 seconds (approx.) Interior Features (SL Trim = Higher-End) Leather-appointed seating Heated front seats Power driver seat Dual-zone automatic climate control Premium interior materials Spacious seating for 5 Large trunk (~15.3 cu ft cargo space) Technology & Infotainment AM/FM/CD audio system Available Bose premium sound system Auxiliary input Push-button start Keyless entry Steering wheel audio controls Safety & Security Front, side, and curtain airbags Anti-lock braking system (ABS) Electronic brakeforce distribution Traction control & stability control Tire Pressure Monitoring System (TPMS) Exterior Features 16–17 inch alloy wheels Power-adjustable side mirrors Chrome exterior accents (SL trim) Optional power sunroof Sleek midsize sedan styling Size & Capacity Seating: 5 passengers Length: ~182.5 inches Fuel Tank: 20 gallons Curb Weight: ~3,100–3,200 lbs Overall Summary The 2009 Altima 2.5 SL is a well-balanced midsize sedan that focuses on comfort, fuel efficiency, and reliability. The 2.5L engine is economical and smooth, while the SL trim adds luxury touches like leather, heated seats, and premium features. It’s a solid daily driver with good gas mileage and a comfortable ride, though the CVT transmission is something to pay attention to for long-term reliability.