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Kia U.K. builds a 420-horsepower Stinger GT track car

The Kia Stinger GT is an admirable sports sedan, er, hatchback, with 365 horsepower. But Kia's U.K. branch wanted more, leading to the 420-horsepower Singer GT420 you see here. As Kia explains, the car used to create this one-off track car is actually the first Stinger GT pre-production test car in the U.K. It was used for final testing, photography, and was even featured on Top Gear and The Grand Tour. Once its testing and publicity duties were over, though, it was slated to be crushed. But some delaying and the idea of building a track car saved it. To get it to its final output ratings of 420 horsepower and 413 pound-feet of torque, Kia (with help from Hyundai Motor Group's technical team in Germany) added a high-flow air filter, aftermarket exhaust without catalytic converters, an upgraded transmission cooler, and an engine tune. The car also benefits from weight reduction: The whole car was gutted, taking out everything unnecessary for speed such as the sound system, rear seats, carpeting, bumper supports and more. Even with the addition of a roll cage and extra chassis braces, the car is just over 330 pounds lighter than stock. Handling and stopping capabilities were also enhanced with stiffer springs and thicker anti-roll bars, along with six-piston brake calipers and brake cooling ducts up front. The car also gets visual changes in the form of a front splitter and rear spoiler and diffuser, plus the bold vinyl wrap. Naturally, this isn't a production car, especially with the gutted interior and emissions non-compliant exhaust. But looking at the list of modifications, it wouldn't be hard to replicate the Stinger GT420 on your own. In fact, someone could probably exceed the car's performance, since there are some areas ripe for upgrading Kia skipped over, such as upgrading the turbochargers. Your move, tuners.

UPDATE: 2021 Kia K5 name confirmed in fuel economy listing

UPDATE: Additional Kia K5 fuel economy data has been added to the FuelEconomy.gov website. It includes two sets of fuel economy numbers for what seems to be front-wheel-drive trims of the 1.6-liter turbocharged K5. You can find those numbers in the updated text below. The website has also seemingly removed the numbers for the all-wheel-drive version, but those are still present in this article. We've already seen Kia's new midsize family sedan, but details about it are still being fleshed out, including what it will finally be named. Based on a listing at the EPA's FuelEconomy.gov website, it seems the sedan will officially be known as the 2021 Kia K5, dropping the old Optima name. Besides the name, we also get snippets of information about one engine in multiple configurations. The engine in question is a turbocharged 1.6-liter four-cylinder, likely the same engine found in the Hyundai Sonata, which makes 180 horsepower and 195 pound-feet of torque. The Hyundai uses an eight-speed automatic transmission, and the Kia probably will, too. With what is likely the front-drive model, the K5 will get 29 mpg in town, 38 on the highway and 32 combined. There's also a version that gets slightly worse economy at 27 in town, 37 on the highway and 31 in combined driving. It's probably a heavier, more well-equipped trim. Both versions do get better fuel economy than the Sonata with the same engine (27 city / 36 highway / 31 combined). The third set of numbers is for the all-wheel-drive version, which will be unique to the Kia. According to the listing, it returns 26 mpg in the city, 34 on the highway and 29 in combined driving. Though all these numbers are for the 1.6-liter, there is another engine coming, which Kia has also previously said will be another turbocharged engine. It will probably be the 2.5-liter for the Sonata N-Line with 290 horsepower and 310 pound-feet of torque. With the Kia K5's option for all-wheel drive, it will join a growing group of midsize sedans with the drivetrain: the Subaru Legacy, Nissan Altima, Toyota Camry and the soon-to-be-discontinued Ford Fusion. Based on the engine size and output, this Kia K5 will be a direct competitor to the Altima and Camry, as well as the Legacy with the naturally aspirated engine. Depending on trim levels, the K5 ties or beats the Camry, which returns 28 to 29 mpg combined. The Altima returns 29 to 30 mpg combined depending on trim level, and the Legacy hits 30 mpg. Related Video:    

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.