When Mercedes-Benz unveiled the new SL last year, it brought just the "55" and "63" versions to the table. Both are powered by a V8 engine but there are more variants currently under development, including a four-cylinder model with an electric turbocharger and a plug-in hybrid model (see the related links below). The latter was recently spied by our photographers in Sweden testing with literally no camouflage.
It seems that, at least visually, there won’t be significant differences between the V8 models and the PHEV. The big giveaway here is the charging port located on the rear bumper but other than that, this prototype appears to be pretty much identical with the versions that are already on sale. This is probably not the most appealing wheel design, though keep in mind the test car was riding on winter tires.
