If you're looking for a luxury sedan with a powerful engine, fun tech, and safety features, consider the 2021 BMW 3 Series or 2021 BMW 5 Series. This comparison put out by our team at BMW of Rochester Hills will help drivers in the Rochester Hills, Oakland Township, and Sterling Heights, MI, area get to know these sedans better.

BMW 3 Series vs BMW 5 Series: Engines

The BMW 3 Series and the BMW 5 Series have multiple engines across each trim. The BMW 3 Series has three engines:

  • 2.0L 4-cylinder BMW TwinPower Turbo engine
  • 3.0L 6-cylinder BMW M TwinPower Turbo engine
  • Combination 2.0L 4-cylinder BMW TwinPower Turbo gas engine and electric motor

The BMW 5 Series has a total of four engines. Three of the four engines are the same engines offered in the BMW 3 Series.

The one different engine pushes a lot more power through the 5 Series sedan. This fourth engine is a 4.4L V8 BMW M TwinPower Turbo engine. This engine gets a whopping 523 horsepower. This engine is only available on the BMW 5 Series M550i xDrive trim.

Technology in the BMW 3 Series vs BMW 5 Series

Both the BMW 3 Series and the BMW 5 Series are full of tech features. Some tech features that the 3 Series and the 5 Series have in common are:

  • BMW Live Cockpit-This is the BMW instrument cluster activated by voice. It includes navigation, Bluetooth®, and two USB ports.
  • iDrive 7.0 Operating infotainment system-Use this system to stream music, access navigation information, other smartphone apps, and in-vehicle communication systems.
  • Apple CarPlay®, Android Auto™, and Bluetooth® capability-Using these capabilities, you can stream music, call and text hands-free, and use smartphone apps with your vehicle's infotainment system.
  • Connected Package Professional-This package comes with traffic information, parking information, remote door unlock, and more.

While the 3 Series and the 5 Series have similar technology features with essential functions, the 5 Series takes these systems a step further. The infotainment system in the 5 Series comes to 12.3 inches, and the BMW Live Cockpit is larger with cloud-based map data.

Safety in the BMW 3 Series vs BMW 5 Series

The BMW 3 Series and the BMW 5 Series have multiple driver-assist safety features. These systems can sometimes take control of a vehicle if an accident is imminent.

The BMW 3 Series has standard Active Guard with Frontal Collision Warning and Automatic City Collision Mitigation and Braking. This system uses cameras and radar to monitor for accidents. If the system senses an accident might happen, you'll get an alert, and if the accident is imminent, the system will apply the brakes.

The BMW 3 Series also has standard Automatic high beams. The Automatic high beams sense the darkness levels and turn on the high beams when it gets dark enough. When another vehicle passes by, the beams lower to avoid blinding the other driver.

The BMW 5 Series has a few more standard safety options. The 5 Series has a standard Active Driving Assistant, including Frontal Collision Warning, Active Blind Spot Detection, Lane Departure Warning, and Speed Limit Information. While this is standard on the 5 Series, certain features are available on the 3 Series.

Test Drive Your Favorite Sedan

Have you figured out which luxury sedan is best for you? The 2021 BMW 3 Series and 2021 BMW 5 Series both have powerful engines, lots of technology, and great safety features.

If you're from the Rochester Hills, Oakland Township, and Sterling Heights, Michigan, area, and want to test drive either the 3 Series or the 5 Series, come down to BMW of Rochester Hills. Contact us to schedule a test drive today!

Make an Inquiry


BMW of Rochester Hills

45550 Dequindre Rd
Directions Shelby Township, MI 48317

  • Sales: (888) 294-1015
  • Service: (248) 997-7700
  • Parts: (248) 997-7700


  • Monday 9:00AM-8:00PM
  • Tuesday 9:00AM-6:00PM
  • Wednesday 9:00AM-6:00PM
  • Thursday 9:00AM-8:00PM
  • Friday 9:00AM-6:00PM
  • Saturday 10:00AM-4:00PM
  • Sunday Closed