Lotus technical director Nick Chester has insisted that engine suppliers Renault has made progress.
Lotus endured a woeful practice day for the Australian Grand Prix as Romain Grosjean and Pastor Maldonado completed just 14 laps between them across the two sessions.
Both drivers missed an entire session, while Grosjean's E22 snapped sideways under braking for turn six and he hit the wall.
"We experienced quite a few issues today," said Chester. "We were delayed getting Romain’s car out in the first session due to a gearbox fluid leak whilst Pastor had an electrical problem. Part of Pastor’s issue was related to the wiring loom, which we needed to replace.
"The looms are so complex for the latest generation car that this meant Pastor missed the second session. Romain managed track time in the latter session, and we have seen that Renault have made great steps in the driveability of the power unit. With today’s issues behind us, we’re hoping for a much better day tomorrow."
Grosjean expressed mild satisfaction at being able to complete practice starts.
"If we take the positives we can say that we’ve completed a few practice starts, and we’ve proven that Renault have done a good job from the laps we completed," he said. "It’s certain that we have a lot of work ahead and we still need to learn the tyres, the brakes and find a good setup."
"At the moment, we are 19th. So 19th or 22nd, I'd rather have a good car for a good race than being nowhere and not understanding things and being a pain for an hour and a half," he added.