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What do J.D. Power's quality ratings really measure?

Check these recently released J.D. Power Initial Quality Study (IQS) results. Do they raise any questions in your mind? Premium sports-car maker Porsche sits in first place for the third straight year, so are Porsches really the best-built cars in the U.S. market? Korean brands Kia and Hyundai are second and fourth, so are Korean vehicles suddenly better than their US, European, and Japanese competitors? Are workaday Chevrolets (seventh place) better than premium Buicks (11th), and Buicks better than luxury Cadillacs (21st), even though all are assembled in General Motors plants with the same processes and many shared parts? Are Japanese Acuras (26th) worse than German Volkswagens (24th)? And is "quality" really what it used to be (and what most perceive it to be), a measure of build excellence? Or has it evolved into much more a measure of likeability and ease of use? To properly analyze these widely watched results, we must first understand what IQS actually studies, and what the numerical scores really mean. First, as its name indicates, it's all about "initial" quality, measured by problems reported by new-vehicle owners in their first 90 days of ownership. If something breaks or falls off four months in, it doesn't count here. Second, the scores are problems per 100 vehicles, or PP100. So Power's 2015 IQS industry average of 112 PP100 translates to just 1.12 reported problems per vehicle. Third, no attempt is made to differentiate BIG problems from minor ones. Thus a transmission or engine failure counts the same as a squeaky glove box door, tricky phone pairing, inconsistent voice recognition, or anything else that annoys the owner. Traditionally, a high-quality vehicle is one that is well-bolted together. It doesn't leak, squeak, rattle, shed parts, show gaps between panels, or break down and leave you stranded. By this standard, there are very few poor-quality new vehicles in today's U.S. market. But what "quality" should not mean, is subjective likeability: ease of operation of the radio, climate controls, or seat adjusters, phone pairing, music downloading, sizes of touch pads on an infotainment screen, quickness of system response, or accuracy of voice-recognition. These are ergonomic "human factors" issues, not "quality" problems. Yet these kinds of pleasability issues are now dominating today's JDP "quality" ratings.

These are the cars with the best and worst depreciation after 5 years

The average new vehicle sold in America loses nearly half of its initial value after five years of ownership. No surprise there; we all expect that shiny new car to start depreciating as soon as we drive it off the lot. But some vehicles lose value a lot faster than others. According to data provided by iSeeCars.com, trucks and truck-based sport utility vehicles generally hold their value better than other vehicle types, with the Jeep Wrangler — in both four-door Unlimited and standard two-door styles — and Toyota Tacoma sitting at the head of the pack. The Jeep Wrangler Unlimited's average five-year depreciation of 30.9% equals a loss in value of $12,168. That makes Jeep's four-door off-roader the best overall pick for buyers looking to minimize depreciation. The Toyota Tacoma's 32.4% loss in initial value means it loses just $10,496. The smaller dollar amount — the least amount of money lost after five years — indicates that Tacoma buyers pay less than Wrangler Unlimited buyers, on average, when they initially buy the vehicle. The standard two-door Jeep Wrangler is third on the list, depreciating 32.8% after five years and losing $10,824. Click here for a full list of the top 10 vehicles with the least depreciation over five years. On the other side of the depreciation coin, luxury sedans tend to plummet in value at a much faster rate than other vehicle types. The BMW 7 Series leads the losers with a 72.6% drop in value after five years, which equals an alarming $73,686. BMW's slightly smaller 5 Series is next, depreciating 70.1%, or $47,038, over the same period. Number three on the biggest losers list is the Nissan Leaf, the only electric vehicle to appear in the bottom 10. The electric hatchback matches the 5 Series with a 70.1% drop in value, but since it's a much cheaper vehicle, that percentage equals a much smaller $23,470 loss. Click here for a full list of the top 10 vehicles with the most depreciation over five years.

Mark Webber hospitalized as Porsche takes first WEC victory, Toyota wins championship [UPDATE]

It was a mixed bag for the Porsche team at the 6 Hours of Sao Paulo this weekend – the last race of its first season in the FIA World Endurance Championship. On the one hand, the German team took its first win since launching its LMP1 effort at the start of this season. On the other, its star driver suffered a massive crash that left him in the hospital. The crash occurred with less than half an hour to go when Mark Webber, who was running sixth in the #20 Porsche 919 Hybrid, lost control at Turn 14 at the Interlagos circuit – the same spot where he crashed his Jaguar F1 car during the 2003 Brazilian Grand Prix – and crashed tail-first into the barrier. Both Webber and Matteo Cressoni (driver of the #90 Ferrari 458 Italia with which Webber collided) were evacuated to the trackside medical center and were then taken to the nearby Hospital Bandeirantes. Both were reportedly conscious throughout but are undergoing further testing, described as being in "satisfactory" condition by the FIA medical official on the scene. The occurrence of the crash so close to the end of the race, and the time it took to clear the wreckage, meant there was not enough time for a restart, so the race was completed under the safety car. But when the field did cross the finish line, it was the #14 Porsche 919 Hybrid driven by Romain Dumas, Neel Jani and Mark Lieb that took the checkered flag – marking the first time that Porsche has won an endurance prototype race since 1989. Of course, that solitary victory was not enough for Porsche to take the title, which went to the Toyota TS 040 driven by former F1 drivers Sebastien Buemi and Anthony Davidson, who finished the race in second place ahead of the Audi R18 E-Tron Quattro driven by the retiring Tom Kristensen and his co-pilots Lucas di Grassi and Loic Duval. Top honors for the season in LMP2 went to Sergey Zlobin for SMP Racing in the Oreca-Nissan, while Ferrari took the GT title. UPDATE: Mark Webber released the following statement on his condition: "I'm quite sore this morning, am pretty bruised and have got a stinking headache. I've got no recollection of the accident or how it happened. The team is looking into the details to find out more.