Lewis Hamilton fastest ahead of Nico Rosberg, another dominating Mercedes one-two in the morning practice session for 2015 Chinese Grand Prix at Shanghai.
After first half of the session, Hamilton jumps to top the time-sheet with a 1m39.033s – half a second quicker than his teammate Nico Rosberg.
Many drivers’ struggling with lock-up and made runoff visit mainly at, turn 1, turn 6 and the tight Turn 14 hairpin.
Malaysian GP winner, Sebastian Vettel set third fastest ahead of his team-mate Kimi Raikkonen, and a great performance from Sauber rookie Felipe Nasr as he made fifth fastest lap-time, 1.9s off the pace.
Renault-powered cars were sixth to eighth – Red Bull drivers Daniel Ricciardo and Daniil Kvyat leading Toro Rosso man Carlos Sainz Jr.
Felipe Massa finished that session in 10th place, just one-thousandth of a second behind team-mate Valtteri Bottas but a full two seconds off Lewis Hamilton. Lotus speedy Pastor Maldonado spent a lengthy spell in third fastest, but finally he falling back to 11th.
Jolyon Palmer, who completed 25 laps in that session and finished just six tenths off the pace of regular Lotus driver Pastor Maldonado.
Fernando Alonso was seventh fastest after the first half-hour of runs but the Spaniard failed to improve his time for the rest of the session. Jenson Button was the quicker of the McLarens in 13th.
Nico Rosberg sets the first time of the weekend, a 1:41.052. Following a very promising lap from Pastor Maldonado, his time of 1m41.335s is good enough for second.
At the very back of the field are Manor’s Stevens and Merhi. They are both more than six seconds off the pace compared to 18th placed Force India’s Nico Hulkenberg who is just three seconds down. Another positive sign, The two Manor Marussias have completed nearly 30 laps between them
Jolyon Palmer successively made his F1 race weekend debut, Palmer, 24, won last season’s GP2 title to become the first Briton to do since Lewis Hamilton in 2006.