DRUG and alcohol affected drivers will be fined a minimum $2800 under planned new laws in Victoria.

The new law is aimed at capturing motorists who drive with both drugs and alcohol in their system, News Ltd reports.

The offence will carry a much greater penalty than the current minimum fines for drink-driving, which are $423 for blowing between 0.05 and less than 0.1 and $598 for blowing 0.1 and over.

Police Minister Peter Ryan said new laws are being drafted with the Department of Justice, Victoria Police and VicRoads.

"We believe Victoria is one of the few jurisdictions in the world to create a specific penalty for drivers detected with illegal drugs and alcohol in their systems," Mr Ryan told the Herald Sun.

Mr Ryan said the minimum first offence will draw 20 penalty units, which results in a fine of more than $2800 and a mandatory minimum 12-month licence cancellation.

The penalties will be greater for repeat offenders or offenders recording high blood-alcohol levels.

The current maximum penalty for first-time drug or drink-driving offences is 12 penalty units, or $1680.
Under the proposed reforms, police will also automatically impound the vehicles of thousands more drink drivers, including first-time offenders who blow 0.1 or more.

At the moment, only repeat drink-drivers have their cars confiscated on the spot.

Drink-driving accounts for 25 to 30 per cent of deaths on the state's roads.