Marc Marquez completed 13 laps on Honda's 2014 prototype as testing concluded at Aragon in Spain today, but afterwards the series rookie said he preferred his current machine.

Marquez noted 'some improvement' from the engine of the 2014 machine and although the Spanish starlet did not undertake any set-up work with the bike, he believes the new Honda already offers a solid starting point for next season, but favours his current RC213V.

"The first feeling was quite good and the engine has some improvement," he said.

"With the chassis, there is also an improvement but also some areas to work on but we didn't do any set-up work on the bike.

"Anyway, this is a very good base for the HRC engineers to work from but at the moment I prefer our current 2013 machine."

Marquez completed 60 laps on his 2013 machine, experimenting with a variety of new parts and Bridgestone's latest tyre.

He set his fastest lap in a time of 1m 48.496s, which compared to Jorge Lorenzo's best lap yesterday of 1m 48.076s.

"It's been a positive test here in Aragon - which is one of my favourite circuits," said Marquez.

"I have learned quite a lot in these two days, in the beginning I struggled a lot in the long corners but together with my team we have progressed and today I was able to ride well, with a good rhythm.

"I've tested many things and every exit we had a different setting!

"Now I understand the bike a lot more than at the start of the season and after a few laps I am now able to understand if we have a good setting or not.

"Yesterday I concentrated on the coming GP's and tuning the bike in preparation," he added.

"Then today I tested new parts, some items with ?hlins and also a new tyre from Bridgestone."

Marquez and Randy de Puniet were the only riders remaining at Aragon after the majority of riders concluded testing yesterday.

De Puniet lapped in 1m 49.5s on the Suzuki as he improved his time from Wednesday by around 1.3 seconds.

The Suzuki testing programme will continue throughout August at Motegi and then back in Europe with the official test in Misano and a private shakedown at Mugello.