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Crash test videos show how rust compromises safety

These recently released Swedish videos serve as a reminder that rust isn't just a cosmetic flaw, when it comes to cars. The insurance company Folksam and the homeowner organization Villaagarnas Riksforbund gathered examples of two relatively popular, but by now rusty cars, and then performed crash tests with them at the Thatcham Research facility in Britain. The results are sobering. The rustier cars chosen for the tests were first-generation Mazda6s, cars that have a reputation for early-onset rust in salty surroundings, such as the Nordic countries in Europe or the Salt Belt in the U.S. The cars in the other end of the spectrum were fifth-generation Volkswagen Golfs, which thanks to their body treatment only really start to show rust at over ten years old. But rust isn't just on the surface, it goes bone deep. While the Mazda did decently well in Euro NCAP testing as a new car, there's now a 20 percent higher risk of death in the 2003-2008 Mazda due to the degradation of its bodyshell. In the rusty car, the chassis rail separates from the floor, the footwell ruptures, the sill gives way, the seat mountings move and the dummy's head hits the B-pillar; all important failures, despite Thatcham saying the cars actually performed better in the crashes than they expected with all the rust. But still, the corroded structure isn't able to transmit loads in the way it was originally designed to do. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. The Golf does significantly better — despite rust flakes flying when the Golf hits the wall — as the years have only caused it to lose a single point. An important thing to remember is that the cars aren't tested in comparison to corresponding new, 2018 cars: the tests are in reference to the crashworthiness standards in place when they were new. The cars' airbags inflate like they were supposed to, but on the Mazda the dummy's head bottoms out the airbag due to the car's structure failing, meaning the airbag cannot perform as designed. Driven cautiously, an older car is still mostly fine for driving around. But tests like these remind us that it's not enough that a car runs and drives, if the body has turned into Swedish knackebrod. And if you repair the visible rust and the structure underneath remains as compromised as ever, there's an ugly truth under all the bondo. Perhaps it isn't such a bad idea to have yearly roadworthiness inspections.

2018 Mazda6 gets more power, efficiency to go with updated looks

The 2018 Mazda Mazda6 will debut at the L.A. Auto Show later this month, and the company released teaser images of the exterior and interior Wednesday – both of which tell us a lot about the new car. Mazda also said the sedan will have more efficient and more powerful engines. Starting with the visuals, the car doesn't look extraordinarily different from the current model, but there are notable changes. Up front, the Mazda6 now has a deeper-set grille with a 3D mesh instead of slats. The chrome strip that wraps around the lower part of the grille extends across the width of the headlights, too. Both of these cues are pulled from the Mazda CX-5. From what we can tell in the image, it looks like most of the sheetmetal along the sides and top are roughly the same as the current model. The interior also isn't a major departure from the current car, but the changes do make it cleaner and more elegant. All of the air vents sit along one slender plane that stretches across the interior. It leaves the top of the dash uncluttered and makes the vents look like a more integrated part of the design. Below the vent strip is another line of what appears to be vinyl or leather trim, and below that are the climate controls. The updated looks are accompanied by significant mechanical upgrades. While the current model offers just one engine, a naturally aspirated 2.5-liter four-cylinder, the new car will have two options. The first is again a naturally aspirated 2.5-liter engine, but it now has cylinder deactivation, allowing it to run on just two cylinders at times. For those who prefer power to efficiency, the Mazda6 will also be available with the turbocharged 2.5-liter four-cylinder from the CX-9 crossover. In that application, it makes 250 horsepower and 310 pound-feet of torque. The full reveal of the car happens on November 29 at the L.A. Auto Show. Be sure to check back then for more photos of and details about the car. Related Video: Image Credit: Mazda LA Auto Show Mazda Sedan

2019 Mazda3 fuel economy announced for AWD, hatchback models

Although Mazda engineers gave us fuel economy numbers for one configuration of 2019 Mazda3 at the car's Los Angeles debut, there were still a few versions left out. Now Mazda has released the data for every body style, drivetrain and transmission configuration. That includes the all-new all-wheel-drive iteration, which we will have a full review of this week. Discerning these numbers is a tad tricky since there are three powertrain combinations for each 2019 Mazda3 bodystyle, and they all get slightly different fuel economy. We've listed the different combinations in a chart below: There are a few key takeaways, the first being that the sedan is always the most efficient version of the Mazda3, likely because of better aerodynamics compared to the hatchback. Second, all-wheel drive will cost you fuel economy due to the extra weight of the axles and differential, and the added drag on the engine. Third, the most efficient versions of each body have the same fuel economy numbers as the outgoing Mazda3. The manual transmission-equipped Mazda3 has actually improved fuel economy over the old version by 2 mpg on the highway, and 1 in combined driving. Also worth noting is that only one trim level of the sedan is available with cylinder deactivation and front-wheel drive, and that's the top-level Premium trim. Opting for all-wheel drive on any trim or body style will come with an engine with cylinder deactivation. The hatchback is also the only Mazda3 available with a manual transmission, and it's only offered on the front-drive version.