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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.

Modded budget Mazda Miata takes on new Porsche Boxster in more challenges

Earlier this month, our friends across the pond at Auto Express released the first in a two-video series that would see them try and build up a second-generation Mazda MX-5 Miata that could best a standard Porsche Boxster around the track. While that first video detailed the mods to the MX-5 - a supercharger, some suspension upgrades and a new set of super-sticky rubber being chief among them - and set baseline lap times for the stock car, today, we have the results of the 5,000-pound ($8,200) upgrade job.
Of course, we aren't going to spoil those for you. You'll need to watch the full video, which recaps the upgrades before digging into a comparison of both straight-line-speed differences between the 2.7-liter Porsche Boxster and blown Miata, as well as their behavior and lap times on the track.
Take a look and let us know what you think in Comments.

Fiat 124 Coupe could join Spider line next year

While Mazda's content to tease coupe lovers with the last-gen MX-5 Power Retractable Hardtop and the upcoming RF, the company is loath to offer a version of its lovable roadster with a permanent hardtop. But Fiat isn't so fickle. According to Autocar, the Italian brand could unveil a proper hardtop Fiata as early as next year. Likely called the 124 Coupe – duh – Autocar reports the addition of a fixed roof will spice up the current Spider. But what kind of spice is more difficult to predict. AC reports that FCA could stay the course, offering the new hardtop with the same powertrain lineup as the Spider – 138 horsepower in the UK and 160 hp (164 hp in Abarth trim) in the US – or drive the 1.4-liter turbocharged four-cylinder higher. As for how the car will look, Autocar points to the handsome 124 Abarth Rally Concept from the 2016 Geneva Motor Show. Don't expect integrated rally lights or a standard yellow-on-red paint scheme, but the new model will likely borrow that concept's roofline – more notchback than the MX-5 RF's fastback-like look. That'd fit with the 124 Coupe's ancestors, which wore a traditional notchback roofline. Fiat offered a 124 hardtop between 1967 and 1975, giving a new hardtop Fiata much more historical precedence than a comparable MX-5. AC reports the new 124 Coupe will likely carry a 10-percent premium across the pond, with a similar increase in the US. But predicting the impact of that price hike is a little bit trickier than multiplying the 124 Spider's price by 1.1, since we don't know what trims the Coupe will come in. The Abarth is likely a shoe-in, starting around $31,000. If, and it's a big if, Fiat sells a 124 Coupe Classica, expect a $27,500 starting price, while a hardtop Lusso would be a smidge over $30,000. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.