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

Concept Car of the Week: Mazda Ibuki (2003)

With the Ibuki, Mazda designers synthesized the most successful of the first generation MX-5's iconic elements and evolved their forms to make them even more memorable and simple. To do so, they used a strong geometric theme throughout the car inside and out: LED headlamps; front air intake; tail lamps; rear view mirrors; release handles and interior details down to the pedals – every shape follow the same oval theme. Zooming out, the silhouette – as well as the top view – is also oval, making the Ibuki look more like a toy than a car, which is a real bonus for a small roadster.

A look at BMW future products

BMW and Toyota have agreed to work on a sports car, fuel cells, electric-vehicle components and lightweight materials. The agreement underlined BMW's determination to make its new i electric-vehicle subbrand a success. It has built a special showroom for i vehicles in London and will do the same at its company-owned New York City dealership.

Mercedes-Benz B-Class aerodynamics tested [w/video]

Mercedes-Benz has produced a video testing the aerodynamics of its new B-Class – which it claims is the most aerodynamically efficient car in the world – using a wind tunnel and fluorescent paint. The W245-generation B-Class has the lowest aerodynamic drag in its segment with a Cd of just 0.26, thanks to features such as serrated front wheel arch spoilers, optimized cooling airflow and a Pagoda roof to help airflow over its profile. The car's aero properties were put to the test at the MIRA vehicle test facility in the UK using fluorescent paint in 60mph winds to highlight its flow dynamics, only visible under UV lights.