A prototype for what’s likely to be a new generation of the Porsche 911 GT2 has been spotted. The tester combines the aggressive aero package of the GT3 RS with the exhaust layout and additional vents of the Turbo, suggesting it’s a new GT2.

McLaren has unveiled its new special edition based on the 675LT. The car is called the MSO HS and just 25 examples will be built, each of them packing a 679-horsepower twin-turbocharged 3.8-liter V-8 engine.

Audi’s A4 range gets a new entry-level model in the form of the A4 Ultra. It not only brings the price tag of the A4 down but also its fuel economy.

You'll find all of these stories and more in today's car news, right here at Motor Authority.

2018 Porsche 911 GT2 spy shots and video

679-horsepower McLaren MSO HS makes debut

2017 Audi A4 gets entry-level Ultra model with 31 mpg combined fuel economy

MIT: 87% of vehicles could be electric today with no problem

Volvo and Uber partner to develop autonomous cars

Tesla takes dealership fight in Utah to state supreme court

Report: Porsche Pajun sedan, 928 successor in doubt

New federal big-rig standards promise to cut emissions by 25%, save owners $170 billion

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