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Under the Hood
The 528i has a 240-horsepower, 3.0-liter six-cylinder, while the 535i gets a 300-hp, turbocharged 3.0-liter six-cylinder. The 550i has a twin-turbo, 4.4-liter V-8 that makes 400 hp. All three use ...

Rear doors
Rear doors Push the locking lever on the rear doors down. The door can now be opened from the outside only. ...

Side airbags
In a lateral impact, the side airbag supports the side of the body in the chest and lap area. ...