A fleet of Mazda6 new SKYACTIV diesel cars were driven over a 24-hour-long eco-marathon, the Japanese sedan averaged 137.37 miles per hour (221 km/h), while the other two examples of the breed finished the run with average speeds within half a mile of the leading Mazda6. As such, the current FIA average speed record for diesel-powered production cars in the 2.0 – 2.5-liter category was surpassed by almost 7 mph (11 km/h).
Mazda says that the record-breaking run totaled some 3,293 miles or so, with 23 drivers taking part. No one was permitted to slipstream or drive more than 90 minutes per stint. The final result shows the fuel efficiency of this Mazda sedan which beats some of the popular German diesel sedan. Congrats to Mazda and their SKYACTIV technology.
