There's little emotion from Mark Lundy as his retrial for the murders of his wife and daughter draws towards its climax.

The Crown will continue its closing arguments in the High Court in Wellington this morning.

NZME's Rebecca Quilliam told Newstalk ZB's Rachel Smalley Mark Lundy's been rather quiet, but attentive throughout the whole process.

"When footage was shown that shows his daughter Amber's body and when that happened he looked away and he really tightly closed his eyes.

"That was the extent of the emotion we saw."

Quillam says it's hoped the jury will make a decision - one way or another.

"The outcome that most people don't want to see is a hung jury, where there might be a re-trial."

Prosecutor Philip Morgan told jurors yesterday that Lundy’s car provides evidence he drove to Palmerston North from Petone to kill his wife and daughter.

He says guidelines suggest Lundy’s car would use between 13 and 15 litres of fuel per 100 kilometres.

"The fuel economy he achieved was that he was consuming 28.7 litres per 100km. Now how can this be."

The figures come from working out how far Lundy said he'd travelled, and how much petrol was in his tank when police stopped him in Palmerston North.