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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.

Thanks to smaller engines, vehicle dependability falls for first time in 16 years

As automakers have made engines smaller and smaller to improve fuel economy, problems in those vehicles have gotten bigger and bigger. That's the synopsis of a J.D. Power vehicle-dependability study, which found that dependability dropped for the first time in 16 years, largely because the proliferation of four-cylinder engines is causing the vehicles to be less reliable. Specifically, the number of problems per 100 vehicles (or what J.D. Power calls PP100) during the past 12 months for 2011 model-year vehicles rose six percent from the year-earlier figures for 2010 model-year cars. Singling out four-cylinder vehicles revealed about a 10-percent increase in problems during the past year. This issues largely related to engine hesitation, rough transmission shifting and lack of power, signaling the inability of vehicle makers to iron out some of the problems in their smaller engines as they strove for better fuel economy. Six- and five-cylinder engines proved far more reliable. Among car brands, BMW's Mini sub-brand came out as least reliable, with 185 problems per 100 vehicles during the past year. Toyota's Lexus badge was easily the most reliable, with just 68 problems per 100 vehicles. Coming in second place was Mercedes-Benz. The overall average was 133. Check out J.D. Power's press release below. J.D. Power Reports: Increased Engine and Transmission Problems Contribute to Decline in Vehicle Dependability for The First Time in More Than 15 Years General Motors Company Receives Eight Segment Awards, While Toyota Motor Corporation Garners Seven and Honda Motor Company Earns Six WESTLAKE VILLAGE, Calif.: o Owners of 3-year-old vehicles (2011 model year) report more problems than did owners of 3-year-old vehicles last year, according to the J.D. Power 2014 U.S. Vehicle Dependability StudySM (VDS) released today. The study, now in its 25th year, examines problems experienced during the past 12 months by original owners of 2011 model-year vehicles. Overall dependability is determined by the number of problems experienced per 100 vehicles (PP100), with a lower score reflecting higher quality. The study finds that overall vehicle dependability averages 133 PP100, a 6 percent increase in problems from 126 PP100 in 2013. This marks the first time since the 1998 study that the average number of problems has increased. "Until this year, we have seen a continual improvement in vehicle dependability," said David Sargent, vice president of global automotive at J.D.

Toyota recalls 337,000 RAV4s and HS250h models for tie rod failure

UPDATE: The post has been updated with additional information from NHTSA. The Basics: Toyota is recalling 337,000 2006-2011 model year Toyota RAV4 crossovers built between October 31, 2005 and September 7, 2010 as well as 2010 model year Lexus HS250h cars built between July 6, 2009 and August 26, 2010. The Problem: When either an affected RAV4 or HS250h is given an alignment and the tie rod adjustment nut on the rear control arm isn't tightened properly, the threads on the tie rod can start to rust. If this happens, the nut may break off and throw off the alignment drastically and suddenly. This isn't a case of the car simply pulling to one side, either. This would seriously upset the balance of the car and could cause the driver to lose control and crash. This is also the third time these vehicles have been recalled for the same issue. Injuries/Deaths: It's unknown if this control arm issue has resulted in any injuries or deaths. Autoblog reached out to Toyota for more information, but a company representative told us that the company isn't able to discuss injuries or deaths caused by this issue (if any) at this time. Based on information from NHTSA documents, it does not appear that any crashes, injuries or deaths have been attributed to the defect addressed in the current recall. The Fix: The dealer will completely replace the rear suspension assemblies at no cost to the owner. The tie rods and nuts will also be coated in epoxy to prevent future rusting from occurring. According to Car and Driver, the previous recalls involved tightening nuts, coating decent tie rods in epoxy and completely replacing rusted ones. The car magazine reports that further complaints were filed and the company is now replacing all components regardless of condition. If you own one: Toyota will notify owners of affected cars by mail. Owners can also check whether their cars are affected by entering the VIN at safercar.gov/vin. Owners with questions can also reach Toyota customer service at 1-800-331-4331 or Lexus customer service at 1-800-255-3987. Related Video: Featured Gallery 2012 Toyota RAV4 View 16 Photos News Source: Car and Driver, Toyota, National Highway Traffic Safety AdministrationImage Credit: Toyota Recalls Lexus Toyota Safety lexus hs 250h lexus hs250h