For 2021, the X5's xDrive50i model has been replaced by the plug-in hybrid xDrive45e. The new plug-in hybrid powertrain consists of a turbocharged 3.0-liter inline-six and an electric motor for a total output of 389 horsepower. A 24.0-kWh battery pack is said to provide up to 30 miles of electric-only driving range. The regular 40i models also receive some light electrification in the form of a 48-volt hybrid system.
Pros Wide range of available engines, high-quality cabin materials, intuitive infotainment interface.
Cons Somewhat vague steering feel, tight third-row passenger space, V-8 performance costs a lot extra.
The xDrive45e plug-in hybrid model debuts.Last year's xDrive50i is discontinued.Android Auto is now standard.Minor feature changes.
Pros Strong performance from available engines Luxurious, comfortable cabin lives up to its price tag Spacious cabin and cargo area
Cons Small mirrors and wide roof pillars create blind spots Limited interior storage Wide doorsills inhibit entry and exit
Wi-Fi hotspot now standard,no other significant changes for 2021.
Pros Tremendously powerful six-cylinder engine Grip and handling are excellent Sleeker styling than the related X3 M
Cons Excessively stiff ride Rear headroom is a bit tight Sloping roofline compromises cargo space and visibility
Like several other BMWs, the X4 M gains Android Auto and SiriusXM satellite radio as standard features for the 2021 model year. Otherwise, the flashy fastback SUV remains unchanged.
Pros Abundance of horsepower, impressively quick acceleration, deft handling.
Cons Stiff suspension can be harsh over bumps, not as practical as X3 M, polarizing rear styling.
Pros Balanced power delivery Impressive grip and balance Fun on tap in 4WD Sport setting Transmission refinement
Cons Punishing ride Only subtly different next to regular X4 Not as pointed as a full-fledged M4
