Christian Horner says it is difficult to find the words to describe how impressive he feels Sebastian Vettel's current winning run is after the German made it seven victories in a row in Abu Dhabi.

Success at Yas Marina allowed Vettel to match Michael Schumacher's seven-in-a-row from the 2004 season, and put him just behind the all-time record of nine held by Alberto Ascari.

Comparing Vettel's current run with that of Schumacher, Horner said it was equally - if not more - impressive than the results enjoyed by the former Ferrari man with his victory in Abu Dhabi being one of the highlights.

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"It was absolutely mind-blowing in many respects," he told Reuters. "After the start, Seb just got his head down and disappeared.

"The times now are very different [compared to in Schumacher's day. We're all on a standard tyre now, there's no testing, we're limited on the amount of engines we can have, the amount of wind tunnel time and so on.

"So it's a much more even playing field . It's always difficult to compare generations with generations but the level at which he's performing, I don't have words to describe how phenomenal it is. It's just truly impressive."

Should Vettel win the final two races of the year he would match Schumacher's record of 13 wins in a season and Horner said his quadruple champion had hit form at the right time in the year.

"It's just truly dominant," he said. "He has just hit a patch of form that is incredible. We know Mark Webber is a very fine racing driver and in a race that didn't have any safety cars or any issues, to achieve what he's done is quite mind blowing," said Horner.

"I think Sebastian's just stepped up another gear."