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Nissan's Cummins tie-up bears first fruit with Frontier Diesel Runner concept

The 2014 Chicago Auto Show is proving to be a surprisingly big show for alternative fuels. The Chevrolet Silverado HD pickups are getting a compressed natural gas option and the refreshed BMW X3 is receiving a diesel engine, as is the German automaker's 7 Series. You can add one more oil burner to the mix, at least in concept form: Nissan has released its Frontier Diesel Runner Powered by Cummins with a 2.8-liter, four-cylinder turbodiesel engine and an eight-speed automatic transmission from ZF.
While Nissan calls the Cummins-powered Frontier a concept, it's really just a Frontier DesertRunner 4x2 with a diesel engine replacing the standard 4.0-liter V6, and it's meant to gauge consumer interest for a diesel option in the next-generation Frontier. Nissan has clearly noticed that Chevrolet will be offering a diesel in its new Colorado and wants to see how buyers will react to a mid-size alt-fuel pickup from a Japanese brand.
Exterior modifications to the concept are minor. To show off the engine, there is a transparent hood insert and the pickup has been painted in a two-tone finish of high-gloss red and matte silver edged in carbon fiber trim. The interior gets the same combo of red, silver and carbon fiber to match the outside.

NHTSA opens investigation into Nissan's handling of airbag recall

In March of 2014, Nissan recalled eight models among its Nissan and Infiniti brands, totaling more than one million vehicles, over faulty occupant classification system software controlling the passenger airbag. The company discovered a variety of factors that would interfere with the system's ability to detect an adult passenger in the shotgun seat, resulting in an illuminated warning on on the dashboard and the passenger airbag not deploying in an accident. Yet 124 complaints submitted to the National Highway Traffic Safety Administration since the recall allege that the dealer-installed fix hasn't actually fixed the problem; some consumers say the problem persists after multiple trips to the dealer. The Detroit News reports that NHTSA is opening an investigation into the matter to determine whether a new recall is needed. The occupant sensor has been a bugbear for Nissan over the past couple of years; a much smaller recall for the issue in 2013 covered five of the eight vehicles that were recalled in 2014, and that earlier recall also continued to generate complaints after the issue had supposedly been fixed. At the same time, the company learned that in two instances there was another twist, where the dashboard warning wasn't illuminated but the passenger airbag still didn't go off in an accident. Nissan isn't alone, though, with airbag recalls on a steep upswing across the industry even before the Takata debacle.

Nissan-Renault mule teases mysterious subcompact

There's always something intriguing about a mystery, especially of the automotive kind, and that's exactly what we have here. Our spies recently spotted this Nissan-Renault test mule on the road in Southern Europe. But what, exactly, are they testing? From the front end, it's clear this mule started life as a Nissan Versa Note, but check it out in profile to see the cut down rear doors. They're significantly shorter than on the production car, and the wheelbase isn't as long here, either. The tacked on fender flares suggest a wider track than stock, too. Making things even more complicated is the bizarre cladding this subcompact hatch is wearing. The odd tumors on the hood and blistered side panels indicate that the automaker is trying to keep the design underneath a secret. Given Renault and Nissan's tight relationship, it also isn't clear which company is testing this model. While the body comes from the Note, this one is wearing French license plates. According to our spies, the vehicle was also spotted leaving a Renault testing location. There are some possibilities, though. Renault already has the new Twingo out, and the next-gen Megane has an imminent release. The French brand could now be at work on a future Clio. Alternatively, Nissan is reportedly using the Sway concept as inspiration for the upcoming Micra, and we could be getting a preview here. Give us your best guess in Comments. Related Video: