1991 Mazda Rx-7 Convertible 2-door 1.3l on 2040-cars

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2018 L.A. Auto Show: 5-plus takeaways on Jeep, Honda, Porsche and more

The 2018 L.A. Auto Show is making a strong case that auto shows aren't dead. Carmakers are ladling out sports cars and SUVs featuring serious style and performance in Los Angeles, and it's a feast for the senses. We're talking the new Porsche 911, the long-awaited Jeep Gladiator and the stylish Mazda3. It's the best car show with the most important reveals since the 2018 Detroit Auto Show kicked off the year. Here are some quick reactions: The 2019 Jeep Gladiator is a rock star When the story went live on Autoblog, our traffic went straight up. I've literally never seen the graph go straight up. So yeah, you guys seem to like it. I do, too. It's everything I want in a vehicle, including enough of a retro feel that it satisfies my cravings for an old Cherokee XJ. It's more capable and likely more expensive than I originally anticipated, but Jeep is going to have to expand its Toledo factory to keep up with demand. Don't be fooled by whatever the politicians say when that happens. It's because people like Jeeps and pickups, and this is the hero sandwich of all of that. I'd likely go with the 3.6-liter and a manual transmission if I were buying a Gladiator, but the diesel is compelling, too. Gladiator is a great name, drenched in history. I like it better than Scrambler, which never felt right to me. Only issue: It's a little over-the-top. Imagine this conversation: "So, ready to go to Panera?" "Sure, let's take the Gladiator." I mean, it's a bit much to refer to your personal vehicle as the Gladiator. Unless Russell Crowe is driving it. Then it's fine. The 2020 Porsche 911 is conservatively brilliant Every time I drive a 718 Cayman, Jaguar F-Type or another 911 challenger, I wonder if the 911 may be over the hill. It's not. And it likely never will be. This latest generation, dubbed 992 in Porsche-speak, stayed the course. The back takes some Mission E stylings that give the 911 a more modern feel. The flat six gets a little more power. The digital-heavy interior looks futuristic and slick. But overall, it's a blocking-and-tackling update that should satisfy the purists and maybe draw in a few new Porsche fans. It's the right time for the 2019 Honda Passport This slots between the Honda CR-V and the Honda Pilot. That's serious segmentation, but it's another crossover, and it's undoubtedly what the people want.

Mazda6 diesel to race at Rolex 24, team and drivers announced

Mazda is getting serious about showing off the Skyactiv-D turbo-diesel four-cylinder engine in the Mazda6. The automaker has just announced it will campaign three diesel Mazda6 racers in the Grand-Am GX class of the upcoming 2013 Rolex 24 at Daytona in a quest to walk away with the company's 24th class win. Mazda partnered with SpeedSource to develop the race version of the new sedan, with Japanese and American engineers lending a helping hand where needed. Meanwhile, Freedom Autosport and Visit Florida Racing/SpeedSource/Yellow Dragon Racing will helm teams of their own.
Each car will make use of a five-driver team for the 24-hour race on January 26. In the interim, you can check out the full press release below for more information as well as the full driver roster. Mazda says we can expect to see the No. 70 SpeedSource car under the lights at the 2013 Detroit Auto Show later this month, as well.

How Mazda got Skyactiv-X to work is incredible

"Take everything you know about engines and turn it around," Mazda North America Vehicle Development Engineer Dave Coleman says, patiently and with a look of benevolent pity, as he's quizzed about the particulars of the company's new engine. The Skyactiv-X engine is enigmatic — and deceptively simple in operation. And the bottom line for American consumers is that they'll be able to buy a car (or crossover; we don't know yet what vehicle will first get it) by late 2019 that provides diesel-like fuel economy but runs on regular old gasoline. In between diesel and spark ignition, but it's neither To truly understand it, you have to dive into the contradictions. Take that regular old gasoline: Contrary to common sense, the lower the octane, the better it works. In the lab, the Skyactiv-X engine loves 80 octane. The lowest Americans get is 87, so the engine is tuned for that octane. Go higher and you lose some low-end torque. Coleman was right. It's hard to wrap your head around an engine that thrives just at the point when most gas engines would aggressively self-destruct. It uses a supercharger to pump additional air — but not additional fuel. It uses spark plugs to start a combustion cycle that normally doesn't need a spark. And, quixotically, it's not displacing Mazda's own American-market diesel engine, currently languishing in a seemingly endless hell of regulatory approval. More bizarre: Mazda is a tiny automaker facing real existential headwinds, and gasoline compression ignition is a massive challenge. GM and Hyundai announced compression ignition, or HCCI, projects (full name, homogeneous charge compression ignition) to great fanfare, but they never amounted to a production hill of beans, crippled by reliability issues or horrible vibrations. Worse, they only worked at an unusably narrow range — low RPMs and low loads. HCCI research improved direct-injection gas and diesel engine technologies for these companies, but HCCI itself remains untamed. The benefits of lean combustion Why even try to tame HCCI? The answer is much better fuel economy and lower emissions. Less burned carbon-based fuel, less carbon dioxide released. That's simple. But there are some thermodynamic reasons for the lean combustion you can achieve with compression ignition that are worth explaining. The ideal amount of fuel for a conventional engine to burn is about a 14:1 air-to-fuel ratio. That lets every molecule burn nicely, in theory.