Light rail is the best option for Brisbane rather than the city council's proposed Brisbane Metro, Labor's lord mayoral candidate Pat Condren has declared.

Mr Condren slammed LNP lord mayor Adrian Schrinner's announcement on Sunday that electric vehicles have been selected to operate on the $944 million Brisbane Metro, saying Labor's 2016 election promise of light rail was "right on the money".

The Brisbane Metro vehicles will have three carriages and be fully electric.

The 60 electric vehicles will cost $100 million more than the council's original $90 million budget, and will be manufactured by a joint bid of companies Volgren and HESS.

However, Cr Schrinner said the additional cost was built into Brisbane Metro's original $944 million budget as part of its contingency fund, meaning the project was still on budget.