McLaren P1

McLaren P1

We often find it interesting to look at the official EPA test results for similar plug-in electric cars.

Both the Porsche 918 Spyder and McLaren P1 are crazy expensive, plug-in hybrid hypercars.  By the numbers, these two cars would appear very similar, but the EPA ratings tell a different story:

As you'll notice in the first graphic below, the Porsche 918 Spyder is far more efficient than the P1 when both vehicles have their gas engines firing.  The 918 returns 22 MPG combined, whereas the P1 manages only 17.

EPA Test Results For 2015 PHEVs

EPA Test Results For 2015 PHEVs

And look at the difference in annual fuel costs!  The 918 is listed at $2,050, whereas the P1 will cost you $3,250 to fuel per year.

EPA Test Results For 2015 PHEVs

EPA Test Results For 2015 PHEVs

And lastly (and perhaps the most telling as to how different these two cars are) is the electric-only range.  The 918 Spyder is listed at 12 miles in this category, whereas the P1 gets the goose egg, or zero.  While the p1 can theoretically go farther on a charge (up to 19 miles in the city, versus the Porsche's 12.97), the electric-only range of the Spyder far exceeds that of the P1, likely due to the P1 occasionally firing the engine into action under even moderate acceleration.

EPA Test Results For 2015 PHEVs

EPA Test Results For 2015 PHEVs

The tale of two seemingly similar cars.  The EPA sees them as vastly different.