Bits of the vehicle's brake were in the rubble and the car's front left tyre ended up down the street while the car itself had landed backwards.
The couple had halted their gardening to pop out to buy a stamp, returning home to see police and neighbours swarming their home.
"We panicked. It was horrible to see," the owner said.
"We lived in South Auckland for 25 years and came to Tauranga for a quiet life."
She said neighbours were walking past saying "again?" because it was the third time a car had crashed through their fence while another had crashed through their neighbour's fence.
They had only moved to Tauranga in August.
"The neighbours are going to get together and try and get the speed limit cut because they reckon [70] is too fast. It should be 50km/h."