Those with an I6 and no doubt aware of the 80's tractor phenomena upon start up with the loud clunk and bang which (on my car at least) rock the vehicle from side to side. For me its always worse the next day after a longish trip.
Having had my car in at the dealers for two weeks with them exploring a plethora of problems, Mazda UK have come back and said that 'Tractor gate' as I call it is perfectly normal.
Mentioned also by Pistonheads review
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"But I do take issue with the bizarre whirring noise on start-up. This lasts for about five seconds and is followed by a clunk so severe that it rocks the car, after which the CX-60 finally settles into a regular, subdued idle. I am still flummoxed by that. What on earth is engaging or disengaging underneath to cause that? It’s like an undercarriage being pulled up but a) this is not a plane, it's a car and b) I hadn’t even put the thing in gear at that point"
Best highlighted in this video by my favourite Japanese mechanic being trying to fix so many issues on the CX60 over the past year
I also asked for the 'Fast idle Cleaning' process to be turned off as in my borough in London I can be fined for idling engines and for multiple violations it can extend to something more serious, let alone my neighbours being seriously annoyed me with. Documentation from Mazda says the engine must not been off during this process.
I also asked about Autohold being made a memory function - I knew the answer to this, but wanted to have it in a PQI just in case Mazda ever take note to this common annoyance for most owners.
Dealers response/Mazda to them
'In regards to the clunking noise when first starting the car, the ‘fast idling’ concern, and the auto hold function- we have been advised that these are all completely normal features on the car and cannot be changed in any way'
Baffled as to how Mazda feel this is acceptable on any car let alone a 'premium' touted £50k SUV.
Having had my car in at the dealers for two weeks with them exploring a plethora of problems, Mazda UK have come back and said that 'Tractor gate' as I call it is perfectly normal.
Mentioned also by Pistonheads review

2023 Mazda CX-60 3.3 D | PH Review
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"But I do take issue with the bizarre whirring noise on start-up. This lasts for about five seconds and is followed by a clunk so severe that it rocks the car, after which the CX-60 finally settles into a regular, subdued idle. I am still flummoxed by that. What on earth is engaging or disengaging underneath to cause that? It’s like an undercarriage being pulled up but a) this is not a plane, it's a car and b) I hadn’t even put the thing in gear at that point"
Best highlighted in this video by my favourite Japanese mechanic being trying to fix so many issues on the CX60 over the past year
I also asked for the 'Fast idle Cleaning' process to be turned off as in my borough in London I can be fined for idling engines and for multiple violations it can extend to something more serious, let alone my neighbours being seriously annoyed me with. Documentation from Mazda says the engine must not been off during this process.
I also asked about Autohold being made a memory function - I knew the answer to this, but wanted to have it in a PQI just in case Mazda ever take note to this common annoyance for most owners.
Dealers response/Mazda to them
'In regards to the clunking noise when first starting the car, the ‘fast idling’ concern, and the auto hold function- we have been advised that these are all completely normal features on the car and cannot be changed in any way'
Baffled as to how Mazda feel this is acceptable on any car let alone a 'premium' touted £50k SUV.