Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

BMW 5-series facelift (2013) first official pictures

The BMW 5-series has been facelifted, although you’d be hard pressed to tell on the outside. The most significant changes are under the tweaked skin... So what’s actually been changed?

Porsche announces new Weissach design center and wind tunnel

Porsche is to invest around €150m into its Weissach development facility, including a new design center. The plans also include an electronics integration department and a state-of-the art, on-site wind tunnel, which is hoped will allow the company to realize an holistic approach to efficient design, with a strong focus on aerodynamics. When we spoke with head of Porsche design, Michael Mauer, at this year's Paris motor show, he also alluded to the fact that the Volkswagen Group's – and, more specifically, Walter de'Silva's – recent influence on the German manufacturer was shifting its attitudes: "The Volkswagen Group has a very good understanding of how much freedom a brand needs to keep its characteristics and with [Walter] as 'conductor', I feel a lot of support with design issues within the company," explained Mauer.

Kia CUB concept

Kia gave its new CUB concept its official debut at this week's Seoul Auto Show. The B-segment five-door hatchback was designed at Kia's Namyang Design Center in Hwaseong, South Korea, under the direction of the carmaker's president and chief design officer Peter Schreyer and is less than 4 meters long. Developed as the latest study into Kia's B- and C-segment future models following last year's Trackster concept and the Provo concept unveiled earlier this month at the Geneva show, there are a number of design features taken from the 2007 Kia Kee 2+2 concept.