The Tesla Model S P85D can add another item to its long list of bragging rights.

The regular Model S version of this all-electric luxury sedan was already the best car Consumer Reports had ever tested, earning an almost unheard of near-perfect score of 99 points. But the higher-performance P85D variant topped that, driving away with a raw score of 103. Consumer Reports’ scale only goes up to 100, so they actually had to alter the scoring system to accommodate this new benchmark.

Part of why this all-wheel-drive sedan did so well is that it took the evaluators’ breath away with its speed. With a measured zero-to-60 time of just 3.5 seconds, it’s the quickest car they have ever evaluated. Tesla advertises that it can blitz to 60 miles an hour in 3.1 seconds, or 2.8 as the “P90D” with a “Ludicrous Speed Upgrade” and 90-kilowatt-hour battery. However, raw acceleration is not the only thing that impressed Consumer Reports testers.

SEE ALSO: Consumer Reports and Edmunds Clock Tesla P85D 0-60 in 3.5, Not 3.1 Seconds

The version of the Model S tested was equipped with an 85-kWh battery pack that delivers an equivalent efficiency score of 87 mpg, which is slightly better than its less fleet brethren. Beyond that, it has an EPA-rated driving range of 253 miles and a top speed of 155 mph.

Despite its impressive performance and emissions-free powertrain, testers at Consumer Reports didn’t love everything about the P85D. They thought its interior materials could be better. They also found its cabin louder and ride rougher than what’s provided by the standard Model S.

Additionally, reliability is a big unknown for this forward-thinking car. The P85D is simply too new to have any quality data. According to Consumer Reports, it’s not recommended at this time, though that may change in the future. The P85D was also once declared “undriveable” by Consumer Reports because of an electronics glitch that locked the drivers out of the car.

This article originally appeared at AutoGuide.com