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(Bloomberg) -- The appeal of a supercar used to be relatively straightforward: aggressive styling, a growling engine, and racetrack-ready handling, garnished with an exotic name.

The time-honored formula is being tested as customers demand more than just acceleration and a gawking public. Supercars are starting to feature wireless connectivity, electric-engine options, and even apps to open the doors. Take Bugatti’s latest monster, the Chiron: It comes with an infotainment system that fades to invisibility on the cockpit screens as the car’s speed increases, specs that were absent from its predecessor, the Veyron. Over at McLaren Automotive Ltd., makers of the 866,000-pound ($1.24 million) P1 hybrid, one question on Chief Executive Officer Mike Flewitt’s mind is how to make an electric engine vibrate.

“These are the questions we need to answer for us to be relevant and exciting in the future,” Flewitt said in an interview. “We don’t produce transportation, we produce entertainment.”

Attitudes are shifting rapidly across the sector. All-electric models are starting to creep into the sports car segment, epitomized by the splash Porsche made in September with its Mission E concept. Mercedes-Benz and BMW are vying to make the best highway steering assist, an important step toward autonomous cars. And even the likes of McLaren, Porsche,and Koenigsegg, maker of the $2 million plug-in hybrid Regera, are open to autonomous features that would have seemed unthinkable just a few years ago for brands built on the thrill of the road.

McLaren says it’ll have hybrid technology in half its models by 2022, as it invests 1 billion pounds in 15 new models and derivatives to boost profit. Work is starting on an electric-car concept that could ultimately be a follow-on for the P1 hybrid that went on sale in 2013. McLaren will also use automated driving technologies, especially functions designed to intervene and avoid a crash, though the driver must be able to take back control, Flewitt said.

Customers for “our expensive, exclusive cars” demand the latest technology, Christian von Koenigsegg, CEO of the eponymous Swedish company, said in an interview. “I’m not against being able to switch on a pilot when driving on a long stretch of highway.”

Supercar manufacturers hope the new technology will make their products more interesting, instead of repelling drivers who don’t want to become superfluous. Self-piloting systems that can help enhance the race-track experience and take the strain out of dull stretches of highway are attractive for any buyer, said Koenigsegg, who said he’s getting more inquiries from customers about such features. All his vehicles already connect to the Koenigsegg cloud and have Apple CarPlay.

The broader car market is heading in the same direction. Last year, 37 percent of respondents in a McKinsey & Co. study said they’d switch manufacturers if offered full in-vehicle access to data and media, up from 20 percent the year before.

“Cars increasingly differentiate themselves with connectivity features, less with engine power,” Robert Bosch GmbH management board member Dirk Hoheisel said in an interview. “We’re already amidst this emerging trend.”

The first step in the transformation, however, will probably be electric and hybrid supercars such as the P1, Regera, or Porsche’s 918 Spyder. Battery-powered engines provide an enormous boost to conventional combustion motors and will be necessary in order to flaunt a fast car in city centers that increasingly shut out polluting vehicles. The challenge they pose is their lack of an engine rumble: The sound of a V12 Ferrari Berlinetta screaming past is an intrinsic part of what car lovers associate with the brand. It remains to be seen whether a computer-generated roar will have the same resonance.

“I believe completely different values will be important for differentiation for supercars in future,” said Frank Rinderknecht, chief executive officer of Swiss exotic concept-car specialist Rinspeed. “That change might come quicker than we all expect.”

—With assistance from Christoph Rauwald.

To contact the authors of this story: Naomi Kresge in Berlin at nkresge@bloomberg.net, Elisabeth Behrmann in Munich at ebehrmann1@bloomberg.net.

To contact the editor responsible for this story: Chris Rovzar at crovzar@bloomberg.net.

©2016 Bloomberg L.P.

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