Today on Green Car Reports: We drive the 2015 Volkswagen e-Golf electric car and Golf TDI diesel back to back, Tesla halts Model S assembly to prepare for the Model X, and Ford details fuel-efficient engines for the 2015 F-150. All this and more on Green Car Reports.

Electric or diesel? We compare the 2015 Volkswagen e-Golf and Golf TDI in a back-to-back test drive.

The energy used by electric cars equals a gasoline cost of just 75 cents per gallon, a new study says.

Ford details the small, fuel-saving engines it will offer in the 2015 F-150 full-size pickup truck.

Tesla halts Model S assembly to prepare for Model X crossover production.

A new model year is beginning, but not every car will see it. Find out which cars made the 2015 death list.

Finally, Audi abandons CVTs, choosing to focus on conventional automatic and dual-clutch transmissions instead.

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