Last month in Singapore, Vettel put on a flawless performance by starting on the pole and leading all 61 laps. He crossed the finish line a whopping 32.6 seconds ahead of his closest competitor, Alonso. The 26-year-old German earned his 33rd career victory, which put him in sole possession of fourth on F1's all-time race winners list. Michael Schumacher (91), Alain Prost (51) and Ayrton Senna (41) have more victories than Vettel.
"In Singapore, we had something of a luxurious situation in that, towards the end, we could even take it a bit easier and reduce the speed. Let's hope that it's going to be the same this Sunday."
Vettel has won the last two Korean GPs. Last year, he scored four consecutive victories late in the season (Singapore, Japan, Korea and India) but claimed the championship by just three points over Alonso.
"We've done fantastic in the last few races, but that does not mean that you can bank on it to continue everywhere," Vettel said. "We do have a strong package. That is a fact. How strong? The weekend will show. Korea is a track that, in general, suits us."
Alonso won the inaugural Korean GP in 2010, his first season with Ferrari. The Spaniard is hoping to win in South Korea for a second time and gain ground on Vettel in the championship battle.
"We have to be realistic that we don't have the pace to beat them (Red Bull) in normal conditions, and if we do get any luck, you can be sure we will take it," Alonso said. "We will not give up the fight until it's mathematically impossible to take the title."
After Korea, F1 moves on to Japan (Oct. 13), then India (Oct. 27), Abu Dhabi (Nov. 3) and Austin, Texas (Nov. 17) before the season wraps up in Brazil (Nov. 24).