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

CAFE standard set at 54.5 mpg by 2025

The final version of the new corporate average fuel economy (CAFE) standard was released today and, as expected, automakers will need to attain a fleet average of 54.5 mpg by 2025. The rules include electric and hybrid vehicles and—as of today—natural gas vehicles. The Environmental Protection Agency and the National Highway Traffic Safety Administration proposed the rules in November, after reaching an agreement with automakers last July.

Opel rolls out new cars at Frankfurt motor show

While some automakers had just one or two new cars to show off at the Frankfurt motor show, GM's Opel division flooded the show with seven new offerings that'll be revealed as the show progresses. While there were plenty of new production models to be seen, including the revised Opel Insignia lineup, it was perhaps the Opel Monza concept that was designed to grab the attention of showgoers. We got a sneak peek at the Opel Monza concept a couple months ago, and even though a production version is not planned, the Monza is meant to showcase Opel's recent resurgence.

2014 Maserati Ghibli S Q4 drive review

What is it? For those jaded by the prospect of yet another A6, 5-Series or E-Class, Italy proudly presents a pretty and powerful alternative. Although the new Maserati Ghibli is a conventional sedan -- an extra-curvaceous one, to be sure -- the trident-badge brand's leadership believes it can challenge the coupe-like competitors from Audi, BMW and Mercedes-Benz.