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2021 BMW 4 Series revealed with controversial grille, mild-hybrid tech

With its turbocharged engines, luxurious appointments and robust in-car and driver-assistance tech, BMW's new 4 Series proves it's what's behind that grille that counts.

Steven Ewing Former managing editor
Steven Ewing spent his childhood reading car magazines, making his career as an automotive journalist an absolute dream job. After getting his foot in the door at Automobile while he was still a teenager, Ewing found homes on the mastheads at Winding Road magazine, Autoblog and Motor1.com before joining the CNET team in 2018. He has also served on the World Car Awards jury. Ewing grew up ingrained in the car culture of Detroit -- the Motor City -- before eventually moving to Los Angeles. In his free time, Ewing loves to cook, binge trash TV and play the drums.
Steven Ewing
5 min read
2021 BMW 4 Series
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2021 BMW 4 Series

Yes, that face.

BMW

From its turbocharged powertrains to its robust cabin tech to its advanced driver-assistance systems, there are a lot of reasons to like the 2021 , which officially revealed Tuesday. But the one thing everyone's going to get hung up on is the styling -- specifically, that enormous grille.

Watch this: 2021 BMW 4 Series: More than just a giant grille

Follow your nose

Yes, the 2021 BMW 4 Series has the enlarged kidneys first seen on the Concept 4 showcar from the 2019 Frankfurt Motor Show, as well as the all-electric i4. It's definitely... a look. And it's one we don't like, at least in photos. BMW says the grille "is framed by surfaces with a three-dimensional mesh structure," so there's at least some interesting detail, though it kind of loses any luster it might've had by bolting the European front plate in the middle. (It's going to look awful in US press fleet spec, with a bright yellow New Jersey plate smack dab in the middle.) Thankfully, BMW says this grille treatment won't make its way to the company's other models.

The 2021 4 Series will be offered in 430i, 430i xDrive and M440i xDrive models, the latter of which gets darker exterior trim and larger side air intakes on the front fascia. LED headlights are standard across all models, and the shape just doesn't work with those giant buck teeth in the middle. Compared to an equivalent sedan, the new 4 Series is 2.2 inches longer, 1 inch wider and 2.2 inches lower. But it rides on the same 112.2-inch wheelbase. See how it stacks up to its rivals in our spec comparison.

Luckily, the rest of the 4 Series looks pretty darn good, with a tapering roofline similar to that of the larger coupe. All 4 Series coupes come standard with 18-inch wheels, though a variety of 19-inch options are available, as are M Sport brakes with either blue or red calipers, an aero kit and a rear lip spoiler. The LED taillights have an interesting light signature not unlike that of the recently revealed 2021 Acura TLX, and honestly, we think the new 4 Series looks best from the rear three-quarter view.

2020 BMW 430i vs. 2021 BMW 430i


2020 BMW 430i2021 BMW 430i
Engine 2.0-liter turbo I42.0-liter turbo I4
Power 248 hp255 hp
Torque 258 lb-ft294 lb-ft
Transmission 8-speed auto8-speed auto
0-60 mph 5.5 sec5.5 sec
Top speed 155 mph155 mph
Wheelbase 110.6 in112.2 in
Length 182.7 in187.9 in
Width 79.4 in81.9 in
Height 54.2 in54.6 in
Weight 3,574 lbs3,578 lbs
Cargo capacity 15.7 cu-ft12.0 cu-ft

2021 BMW 4 Series puts a bold face forward

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Tons of tech

Step inside, and the 4 Series' design is far less polarizing. The cabin is largely the same as what you'll find in the 3 Series sedan -- the 4 Series' four-door sibling -- with leather surfaces available in a range of colors, flush-mounted controls on the center console and several different wood and metal inlay options. Being a two-door coupe, the rear seats aren't super spacious, but they can at least be folded flat to accommodate longer items from the 12-cubic-foot trunk.

The 4 Series comes standard with analog gauges and a 5.1-inch color display in the instrument cluster, as well as an 8.8-inch center touchscreen for the iDrive 7 infotainment suite. Opt for the Live Cockpit Professional package and you upgrade to a 12.3-inch fully digital gauge display, like the one offered in BMW's other models, as well as a 10.2-inch central multimedia screen. Regardless of models, navigation comes standard, with real-time traffic data from BMW Maps. And hey, both Apple CarPlay and Android Auto are standard -- finally! -- and wirelessly, no less.

As with the 3 Series, the 4 Series gets BMW's Intelligent Personal Assistant artificial intelligence tech, activated by saying, "Hey, BMW" -- kind of like the "Hey, Mercedes" function found in Benz's MBUX. Unlike MBUX, though, BMW's system is really just for controlling vehicle functions and working with the online navigation data. It's still useful, just not as robust. In other words, no, your BMW can't tell you a joke.

2021 BMW 4 Series
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2021 BMW 4 Series

Like the 3 Series sedan, the 4 Series can be had with a 12.3-inch digital gauge cluster and a 10.2-inch infotainment screen.

BMW

Elsewhere on the tech front, the 4 Series gets the same driver-assistance systems as the new 3 Series. Standard equipment includes lane-departure warning, frontal collision warning, pedestrian detection, blind-spot monitoring, rear cross-traffic alert, automatic high-beam headlights and speed limit information. You can add the company's Driving Assistance Professional Package, which gets you full-speed adaptive cruise control as well as Extended Traffic Jam Assist, a Level 2 driver-assistance feature that adds lane-keeping assistance to make highway commutes easier.

A particularly cool tech upgrade is the optional Parking Assistance Package, which not only includes a 3D surround camera, but has a back-up assistant that actually memorizes the last 150 feet of your journey at speeds below 20 mph, and can automatically trace the same path in reverse. For the 4 Series, this package adds BMW's new drive recorder, which can automatically capture 20 seconds of video around the moment of an impact and save it to the car's hard drive. Your insurance claims adjuster will love it.

2020 BMW 440i vs. 2021 BMW M440i


2020 BMW 440i xDrive2021 BMW M440i xDrive
Engine 3.0-liter turbo I63.0-liter turbo I6
Power 320 hp382 hp
Torque 330 lb-ft364 lb-ft
Transmission 8-speed auto8-speed auto
0-60 mph 4.6 sec4.3 sec
Top speed 149 mph155 mph
Wheelbase 110.6 in112.2 in
Length 182.7 in188.0 in
Width 79.4 in81.9 in
Height 54.8 in54.8 in
Weight 3,827 lbs3,977 lbs
Cargo capacity 15.7 cu-ft12.0 cu-ft
2021 BMW 4 Series
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2021 BMW 4 Series

The roofline is very similar to that of the 8 Series.

BMW

Turbo power with mild-hybrid assist

The 430i comes with BMW's 2.0-liter turbo I4 engine, delivering 255 horsepower and 294 pound-feet of torque. Rear-wheel drive is standard but, as its name suggests, the 430i xDrive comes with all-wheel drive. These models accelerate to 60 mph in 5.5 and 5.3 seconds, respectively. Regardless of driveline, the 2.0-liter turbo engine is paired with an eight-speed automatic transmission.

The M440i xDrive, meanwhile, uses a 3.0-liter turbo I6 engine, which now has a 48-volt mild-hybrid battery, which delivers supplemental electric boost during acceleration and smooths out the action of the stop-start system. (The engine can now shut off below 9 mph rather than waiting until the car comes to a complete stop.) All told, the 3.0-liter I6 produces 382 hp and 369 lb-ft. Its standard all-wheel drive and M Sport rear differential allow the M440i to accelerate to 60 mph in 4.3 seconds. Once again, an eight-speed automatic is the only transmission available.

All 4 Series models get the same hydraulic-lift shock absorbers as the new 3 Series, which we love. This hardware smooths out road vibrations and reduces body movement, but doesn't give up any overall feedback or handling prowess. Compared to the 3 Series, the 4 Series has increased damping forces, firmer springs and larger anti-roll bars, and the coupe sits 0.4 inches lower to the ground. The M440i comes standard with an M Sport suspension, with an even stiffer tune. Finally, the Adaptive M chassis option allows for automatic adjustment of the adaptive dampers, though if our experience with the 3 Series is anything to go on, we think most buyers will prefer the standard and M Sport suspension setups just fine. Speed-sensitive power steering is standard on the 4 Series, while M Sport and M440i models get variable-ratio steering.

Yes, a proper M4 is coming, too, but we won't see that version until after the four-door M3 debuts, likely sometime in 2021.

2021 BMW 4 Series
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2021 BMW 4 Series

The rear three-quarter is definitely this car's best angle.

BMW

Arriving in October

The 2021 4 Series will go on sale globally in October, and it'll be priced from $46,595 in the US, including $995 for destination. The 430i xDrive will come in at $48,595 and the M440i xDrive will cost $59,495. This represents a $650 increase over the 2020 430i and 430i xDrive coupes, while the 2021 M440i is a full $5,150 more expensive than the 2020 440i.

BMW's two-door 4 Series will continue to fight its long-time rivals, the Audi A5 and S5, and the Mercedes-Benz C300 and AMG C43. The 4 Series convertible will surely follow in due course, as will the four-door 4 Series Gran Coupe. Rest assured, they'll pack all the same performance and tech. And they'll definitely have that huge grille, too.