The 2018 BMW 4-Series is most often compared to the Mercedes-Benz C-Class.
Both rely on turbo-4 power in base configuration but offer higher-output options from there.
The C-Class is more elegantly styled, but we like the base turbo-4 in the BMW better.
Handling is comparable in both, with the C-Class a little more buttoned down in steering.
The Audi A5 is a competitor—especially in Sportback guise, which we think is the best four-door “coupe” shape on sale.
The Cadillac ATS is a compelling pick with a competent chassis, but its interior falls down to the BMW.
The Alfa is entertaining to drive, but it’s not yet available as a two-door.
The Lexus RC offers V-6 power and all-wheel drive, like the BMW, but its base turbo-4 is overmatched.
Get FREE Dealer Quotes
|2018 BMW 4-SeriesGet Your Price||2018 Audi A5Get Your Price||2018 Cadillac ATSGet Your Price||2018 Lexus RCGet Your Price||2018 Mercedes-Benz C ClassGet Your Price||2018 Alfa Romeo GiuliaGet Your Price|
|20 MPG City / 34 MPG Hwy||24 MPG City / 34 MPG Hwy||18 MPG City / 32 MPG Hwy||17 MPG City / 33 MPG Hwy||17 MPG City / 33 MPG Hwy|
|Intercooled Turbo Premium Unleaded I-4||Intercooled Turbo Premium Unleaded I-4||N/A||Intercooled Turbo Premium Unleaded I-4||Intercooled Turbo Premium Unleaded I-4||Intercooled Turbo Premium Unleaded I-4|
|Compact Cars||Subcompact Cars||N/A||Subcompact Cars||Compact Cars||Mid-Size Cars|
|430i Gran Coupe||2.0 TFSI Premium Manual||N/A||RC 300 F Sport RWD||C 300 Sedan||RWD|
|Rear Wheel Drive||All Wheel Drive||N/A||Rear Wheel Drive||Rear Wheel Drive||Rear Wheel Drive|
|Automatic w/OD||Manual w/OD||N/A||Automatic w/OD||Automatic w/OD||Automatic w/OD|
|Detailed Spec Comparison|
|2018 BMW 4-Series vs. 2018 Audi A5||2018 BMW 4-Series vs. 2018 Cadillac ATS||2018 BMW 4-Series vs. 2018 Lexus RC||2018 BMW 4-Series vs. 2018 Mercedes-Benz C Class||2018 BMW 4-Series vs. 2018 Alfa Romeo Giulia|