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Buick, Lexus top J.D. Power survey, as vehicle service improves overall

Buick and Lexus returned to their customary place atop J.D. Power's scorecard of satisfaction with dealership service departments. In the Customer Service Index Study, out Thursday, Buick scored 860 on a 1,000-point scale for mass-market brands and has topped this ranking in three of the past four years. Lexus topped the list of luxury brands with a score of 874. Fiat and Land Rover were the bottom-dwellers in the two categories. Buick and Lexus also ranked highly in the research company's overall Vehicle Dependability Study rankings out recently. The customer experience at car dealerships has improved steadily, with the overall industry score rising in seven of the past eight years. And one statistic is particularly remarkable: 94 percent of customers say their car was fixed right the first time. The dominant area of difficulty in repairs seems to be infotainment systems. Only 80 percent of respondents said their stereo was fixed right the first time. And in last month's Vehicle Dependability Study, J.D. Power reported that infotainment systems were the most commonly reported vehicle issue, accounting for 22 percent of all problems reported, up 2 percent from the previous year. J.D. Power surveyed 70,000 customers for the Customer Service Index Study. For the Vehicle Dependability Study, it surveyed 35,186 first owners of 2014 model-year vehicles after three years of ownership. Below are charts for both the current study and the complementary overall brand dependability survey. Related video:

8 things you should know about the Lexus LC 500h powertrain

Lexus unveiled the LC 500h today in The Netherlands, and I got to take a look inside its new hybrid system. On one hand it seems like a box of magic – it combines two seemingly incompatible transmission types into one package. But that's also the ingenious simplicity of the thing. We don't have all of the details on how it all works yet, but here's a rundown of the high points.Efficient business in front, low-key party in the back. What makes it all work is the mullet of transmissions. For the new hybrid transmission, Lexus used the Toyota Hybrid Synergy Drive/Lexus Hybrid System – which consists of an e-CVT with a planetary gearset and two electric motors (one for charging the battery, the other for motivation and regen) – and grafted a conventional four-speed automatic onto the back. The two units actually coexist in one package, with the e-CVT making things efficient and the automatic expanding the capabilities. So at the low end, the system can deliver more torque, and the engine can also run at lower rpm on the highway. It's all thanks to those fixed gear ratios, and it's surprisingly simple.Except it's not that simple. This is where the virtual gear ratios come in. Like current Lexus hybrids, the system has ratios it can call up with the e-CVT. In this case, there are six virtual ratios to complement the four real physical ratios, for a total of 10 "gears" at the transmission's disposal. (Not coincidentally, the V8 LC 500 coupe has a 10-speed automatic.) One of the four fixed gears is always engaged when the car is moving, so the 10 ratios come about from combinations of what the e-CVT in front and the automatic in the back are doing. In other words, all 10 ratios are variations on the four fixed gear ratios, which means that all 10 gears could be considered virtual.It won't use all the gears all the time. In Eco mode, the car will start off on electric power and skip the first couple of "gears." When it's set to Sport or Sport +, the engine will be engaged from a stop and the transmission will select the lowest ratio. The sportier modes will also ignore the top couple of gear ratios.It can drive faster with the engine off. In a Lexus GS 450h with the Lexus Hybrid System, for example, at speeds above 62 mph or so the engine has to start up. This is because something needs to take up some slack from the battery-charging motor-generator or else it will start spinning too quickly.

TMG still developing Lexus LS Sports 650 [w/video]

If you're going to make a super sedan, you'd better do it in Germany. That's where Audi, BMW and Mercedes-Benz do it, along with third parties like Alpina, Brabus and G-Power, among others. Deutschland is the epicenter of the movement, regularly churning out the most powerful four-door rockets in the world. It's also where one of the racing divisions for Toyota has been hard at work on the TMG Sports 650.
Toyota Motorsport GmbH started with a Lexus LS and turned it into a 641-horsepower, twin-turbocharged super sedan it revealed late last year at the Essen Motor Show. But though we haven't heard much about it since then, the team behind Toyota's F1 and Le Mans efforts are apparently still hard at work on the project.
Speaking with Lexus' own UK blog, TMG chief Alastair Moffitt revealed that the project started way back in 2010, shortly after Toyota shut down its F1 program and left the racing team with nothing to do. The 5.0-liter twin-turbo V8 was initially producing as much as 800 horsepower, but has since been refined to 650 so that it could theoretically be put into production and onto the road.