BMW AG’s new 5-Series sedan can drive itself at speeds as fast as 210 kilometers (130 miles) per hour, turn up the radio with the wave of a hand and warn other cars of fog. The car also offers remote parking, surround view cameras, and a feature that enables drivers to see a 360-degree view of their car and its surroundings from their smartphone. But you might not know it has all that gadgetry by looking at it.

While BMW has packed one of its biggest profit makers with its latest technology, the styling is far more traditional. Taking cues from the underwhelming 7-Series flagship, the car sports a broad grille, chrome-framed side air vents and squinting double headlights.

“There’s the risk that the 5-Series will be somewhat yawn-inducing,” said Arndt Ellinghorst, a London-based analyst with Evercore ISI. “I’m curious to see what they’ve learned from the 7-Series, which hasn’t been such a success with lukewarm sales and pricing.”

BMW’s growth next year hinges on the 5-Series, which was officially unveiled in Lisbon this week and generates as much as a fifth of its automotive profit. The Munich-based manufacturer can ill afford anything but a runaway success to hit back at Mercedes-Benz, which this year will grab BMW’s crown as the world’s bestselling luxury brand for the first time in a decade. 

The rollout of the sedan is also an important test for Chief Executive Officer Harald Krueger. While he took the reins just months before the larger 7-Series was introduced in 2015, the 5-Series came to fruition under his direction, and he needs a lift from the overhauled sedan — which also comes as a plug-in hybrid — to fund plans to develop a driverless electric car by 2021.

BMW is packing some of this next-generation technology into the 45,000-euro ($47,700) sedan, which is due to hit showrooms in February. In addition to self-driving features on highways, the car can tell other vehicles in the vicinity that it has turned on its fog lights to warn of low visibility. When parking, a camera focuses on nearby objects to help avoid collisions.

The head-up display, which projects speed and navigation directions on the lower part of the windshield, shows three-dimensional images. Climate control and other functions are operated by touch screen rather than knobs and dials, while entertainment and communication features also respond to hand gestures. Pointing a finger at the dashboard screen, for example, picks up a phone call. Less innovation is evident in the design, as BMW opted to play it safe rather than follow Mercedes with a more radical styling makeover.

“We haven’t completely overhauled our design language for the 5-Series,” Chief Financial Officer Friedrich Eichiner told reporters at the car’s official unveiling in Lisbon. “That’s not unusual when the predecessor was an undisputed hit.”

Still, the car’s perch atop the business sedan segment is under threat. The Mercedes E-Class, which was overhauled earlier this year, is projected to outsell the 5-Series next year amid the customary slowdown as showrooms and buyers adjust to the new model, according to IHS Automotive.

The 5-Series was BMW’s second-biggest seller after the smaller 3-Series last year, and with a margin that’s higher than most of BMW’s models, it’s crucial for the manufacturer’s financial targets, which have been under pressure amid an aging lineup and increased investment.

BMW’s return on sales from carmaking fell to 8.5 percent in the third quarter from 9.1 percent a year earlier. The 5-Series, which typically delivers a profit margin in the upper range of BMW’s target of between 8 percent and 10 percent, according to estimates from Evercore ISI, will be counted on to provide a boost. BMW is betting that the advances under the hood and a consistent design will be the right combination.

“People who drive a lot will appreciate the assistance systems that come with this business sedan,” said Eichiner. As for the tepid approach to styling, “those that decided to change a winning formula weren’t necessarily successful.”

Note: This article was slightly edited from the original.