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Concept Car of the Week: Oldsmobile Aerotech (1987)

In late 1984, Oldsmobile management had so much confidence in the potential of its new inline four-cylinder engine Quad 4, that a small team was assigned to the creation of the Aerotech, a research vehicle designed to demonstrate the engine's performance by setting a new world speed record. Ed Welburn, then assistant chief designer, was mostly working on the 1988 Cutlass Supreme but his passion for race cars made him the ideal candidate to be handed the assignment by Oldsmobile 2 studio's chief David North. Inspired by Le Mans racers such as the Porsche 917LH and Jim Hall's Chaparrals, he designed a long, flowing car that immediately seduced design director Chuck Jordan and GM management.

Mazda diesel delayed again

If you've been waiting for a Mazda 6 diesel, prepare to wait a bit longer. After delaying the US launch until Spring 2014, Mazda now says it won't meet that target date either. Mazda says the engine meets current emissions standards using only a particulate filter, but the resulting blend of performance and fuel economy isn't up to snuff.

New Jaguar XE will get the V6 engine from the F-Type

The new Jaguar XE (pictured) will get the F-Type’s V6 We’re expecting the Jaguar XE – Jaguar’s new smaller saloon aimed at the BMW 3-Series – to arrive at the Paris Motor Show in September before going on sale in 2015 after Jaguar revealed the first official details on the XE at the Geneva Motor Show this month. Jaguar were a little vague on detail, although they did confirm the XE would come with aluminium underpinnings – a first for the sector and to be shared with the new Jaguar SUV when that arrives – and offer Jaguar’s new range of 4-cylinder diesel and petrol engines. But what Jaguar also said is that there will be a range-topping XE capable of 186 mph, which seemed a bit of a stretch for a 4-cylinder engine, however good.