The tougher transport laws come into force on Saturday.
The police say the tech doesn't exist, but AA isn't convinced.
"This Government just cannot deliver safe roads".
The new data found 22 percent of drugs checked were partially or completely different to what people thought they had purchased.
"The right amount of funding is probably more than what we're getting right now."
Drug checking: NZ's safe legal place to check your drugs
The testing regime was used at the Beijing Winter Olympics and is being introduced in New Zealand.
Last summer, drug testing services were allowed at festivals under temporary legislation, that will become permanent by the end of this year.
"We're talking about heart palpitations, seizures, hallucinations, psychosis, that sort of thing in high doses."
