2015 BMW 328i 2015 BMW 428i
$37,500 MSRP $40,750
2.0L Turbo 4-Cylinder Engine 2.0L Turbo 4-Cylinder
3,410 lbs Curb Weight 3,470 lbs
Sedan Style Coupe/Convertible

2015 BMW 3-Series vs. BMW 4-Series

Within the BMW lineup, there are an incredible number options, feature packages and configurations that can make the research process a bit daunting when you begin the search for a new car. While BMW of Topeka vehicle specialists are always available to help you understand what each model has to offer, we also wanted to take a more proactive approach and give you some key insights through an in-brand comparison between the 2015 BMW 3-Series and BMW 4-Series. More specifically, we'll compare the popular BMW 328i vs. BMW 428i models. 

The first thing to notice when comparing the two cars is that they actually utilize the exact same engine. Both are equipped with a 2.0-liter turbocharged four-cylinder engine capable of 240 horsepower and 255 pound-feet of torque. Likewise, both models utilize an 8-speed automatic transmission with paddle shifters sending power to a rear- or all-wheel drive system. With nearly identical curb weight and performance systems in place, both models return EPA-estimated fuel-efficiency ratings of 23 mpg in the city and 35 mpg on the highway.  

In terms of what's under the hood, the 2015 BMW 3-Series and BMW 4-Series are quite similar, but there are some significant differences that distinguish the two.

Key Differences between the BMW 3-Series and 4-Series

The immediately noticeable difference between the BMW 3-Series and 4-series is the body style. The 3-Series is only available as a four-door sedan while the BMW 4-Series is available as a 2-door coupe or convertible. For many drivers, that makes the choice between the 3-Series and the 4-Series one of practicality versus sport. While the BMW 3-Series is every bit the performer of the 4-Series, the sporty styling of a coupe and the open-air experience of a convertible trump the convenience of a sedan for certain drivers. Of course, there are also many drivers who prefer a the ease of entry associated with a sedan.  

In terms of size, the exterior dimensions of the two BMWs are similar, however there are few differences when it comes to interior space. The 3-Series offers more rear seat space, as most sedans do. That said, the 4-Series offers a few additional cubic feet of cargo space, which may be a key factor for avid golfers. 

While specs, dimensions, and features tell part of the story, the best way to get a feel for the BMW 3-Series and 4-Series is on the lot. Schedule back-to-back test drives and BMW of Topeka to get a full understanding for which model is right for you.