Vettel disappointed by new car delay

"Well, of course yes," Vettel told reporters when asked if he was disappointed about the delay.

"The plan was to bring the car here. We didn't make it, but now we have two cars in the garage from last year, so we have to do the best we can.

"It would be a waste of time to make excuses, and say we have not got the new car. We have to try the best we can with the stuff we have in the garage."

The team's new STR3, scheduled to race in Turkey, made its debut in testing ahead of the Spanish Grand Prix, but a heavy crash by Sebastien Bourdais meant Italian squad had to delay its introduction.

The new car is now scheduled to have its first race outing in Monaco.

Vettel admits it will be weird to race the new car for the first time on the streets of the principality.

"On the one hand, Monaco is maybe a strange circuit to introduce a new car. But on the other hand, the earlier you can start working with the new car the better it is. Especially under race conditions."

The young German admitted they have already extracted the maximum from their current car.

"Yes," he said. "It wasn't the plan. It was not even the plan to bring it here originally, as everyone knows. It is not great, but now the stuff is packed in the garage and is here. Do we have a choice? Either we go with the old car or we are spectators."

Although Toro Rosso raced with their current STR2 in Istanbul last year, Vettel believes they will not have an advantage over their rivals.

"I don't think so. I know the circuit, and maybe that is the only advantage we can get," he added. "The car, I think we did quite some steps during last season, especially towards the end of last season and over the winter.

"You have a totally new approach in setting the car up without traction control and without engine braking, so obviously you remember the circuit and you remember the braking points and so on, but apart from that I don't think I will have an advantage running the same car here as last year."