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BMW M4 vs. Lexus RC F in Head 2 Head sports coupe showdown

It's the showdown everyone's been looking forward to, the East versus West grudge match of the year. We're talking, of course, about the BMW M4 versus the Lexus RC F.
Although BMW uses a twin-turbo straight-six and the Lexus uses a free-breathing V8, the two are pretty closely matched on paper: a luxury coupe with over 400 horsepower channeled to the rear wheels.
The BMW has been doing these cars for longer, and the M4 boasts a higher power-to-weight ratio. But then the RC F has more power - and without forced induction to break up the rev range. So which is the better luxury muscle coupe? Watch the latest episode of Motor Trend Head 2 Head to find out.

Did BMW really win the luxury car sales race?

As anyone who follows our monthly By The Numbers series already knows, the luxury car sales race in the United States was close all of last year as BMW, Lexus and Mercedes-Benz seesawed up and down for sales supremacy. At the end of the year, it was BMW on top of the standings with 346,023 total sales. Or was it? According to data released by Polk, comparing the actual number of vehicles registered between the three top luxury players in the US paints a slightly different picture. Polk's data suggests that only 335,259 BMWs were registered in 2015, compared to 340,392 Lexus models. Why the disparity? It's all a matter of timing. Actual end consumers buy new cars, in almost all cases, from a franchised dealer. BMW delivered 346,023 vehicles in 2015, but only 335,259 of them were registered by their new owners. Presumably, those 11,000 BMWs did (or will) end up registered in the driveways of consumers, but they hadn't before January 1, 2016. Lexus General Manager Jeff Bracken wrote in an email to Automotive News, "Luxury sales leadership as measured by vehicle registrations is important to Lexus as it represents actual consumers engaging directly with our dealers." Of course, it goes without saying that we'll be paying keen attention to the 2016 luxury car sales race as it unfolds. If it's anything like it was in 2015, it'll come down to the wire, and even then may not be entirely clear. Related Video: News Source: Automotive News - sub. req.Image Credit: Andrew Harrer/Bloomberg via Getty BMW Lexus Mercedes-Benz Car Buying Car Dealers Luxury luxury cars

Google shares more details on self-driving car accidents

Google has pledged to release monthly reports on the status of its self-driving car program, and says these updates will include information on accidents involving the vehicles. But the company won't release the actual accident reports, a sore point for activists who recently have clamored for the company to be more transparent in the way it tests this promising technology on public roads. "Google is dribbling out bits of information in the hope to silence legitimate calls for full transparency," said John Simpson, privacy director for Consumer Watchdog, a nonprofit that has asked Google to release reports from the 12 accidents the company says it has been involved in over the past six years. "They are testing on public roads, and the public has a right to know exactly what happened when something goes wrong." Under California law, the accident reports are not considered public records. Google has attributed all accidents to human error, and says drivers of the other cars involved caused 11 of the 12 accidents. In eight of those, the Google cars were rear-ended, and the autonomous vehicles were sideswiped in two other crashes. One of the accidents occurred at an intersection when a human driver failed to yield at a stop sign, and in one incident, a Google driver accidentally rear-ended another car while manually driving. Google had previously provided those details. The first monthly report installment sheds new light on which types of self-driving vehicles were involved, directions of travel, locations, and whether the cars were operating in autonomous or manual mode. Update: Google says this information comes directly from the OL 316 forms used to report accidents involving autonomous cars in California, though it has "edited the summaries lightly to protect other drivers' information." But Google still will not release the original OL 316 forms, nor the "traffic collision report" forms used in California to report accidents. Another company that has been involved in a single self-driving car accident, Delphi Automotive, has released this information, which verified its car was not at fault. Regarding Google, Simpson said, "We now know a few more details of what happened. The problem is that it's Google's version and they want us to take their word for it." The Google self-report adds information that goes beyond accidents, with further details on the company's overall program.