There are only two specification differences between the RWD 530i and 540i models. The 540i has the 335-hp six-cylinder engine and 19-inch V-spoke alloy wheels; other than these, the two vehicles are essentially identical. The significantly more powerful 540i does have a sizeable performance advantage, getting to 60 mph exactly one second faster at 4.9 seconds. It is also 174 lbs heavier than the 530i but, despite its bigger engine and higher weight, its EPA figures are only slightly worse than the 530i's 25/33/28 mpg EPA figures, thanks to its 48-volt mild-hybrid system.
Power Tailgate, Heated Front Seats
Active Driving Assistant Pro, Active Cruise Control w/Stop & Go, Active Lane Keeping Assistant w/side collision avoidance, Traffic Jam Assistant, Evasion Aid and Cross-Traffic Alert Front, Extended Traffic Jam Assistant, For limited access highways
Dynamic Damper Control, Adaptive Drive, Active Roll Stabilization
Remote Engine Start, Ceramic Controls, Head-Up Display, harman/kardon Surround Sound System, Power Tailgate, Power Rear Sunshade, rear side window shades, Heated Front Seats
Multi-Contour Seats, Front Ventilated Seats
Aluminum Rhombicle Smoke Grey Trim, pearl chrome accent, Shadowline Exterior Trim, Wheels: 19" x 8" M Y-Spoke Bi-Color Jet Black, Style 845M, M Steering Wheel, M Sport Pkg, Variable Sport Steering, Without Lines Designation Outside, M Sport Suspension, Aerodynamic Kit
Remote Engine Start, Power Tailgate, Head-Up Display, harman/kardon Surround Sound System, Heated Front Seats
M Sport Brakes w/Red Calipers, M Sport Package Pro, Extended Shadowline Trim, M Shadowline Lights, Rear Spoiler