Di Grassi's new Virgin heavier than Glock's

Lucas di Grassi will this weekend finally race Virgin's updated car, but it may still be slower than the one piloted by his teammate Timo Glock.

Due to the volcanic ash cloud and then the short turnaround between Spain and Monaco, di Grassi had to drive the original car with the famously small fuel tank while Glock raced one with significant developments.

Rookie di Grassi, 25, will finally receive the longer-wheelbase VR-01 in Turkey, he confirmed to Brazil's Globo.

"For the first time I have the upgraded car," he said ahead of the Turkish grand prix, "although it is a little heavier than Glock's, because of our difference in height."