Challenging start due to low temperatures

[FreexPatty]

Greetings. I own a 2017 Cooper S R55. Upon initial ignition, the vehicle operates erratically, and when shifted into reverse or drive, it exhibits symptoms of fuel deprivation and often stalls.

When activated and allowed to warm for 20-40 seconds, the engine's revolutions decrease to around 500-750, without stalling, and operates normally.

There is no additional pausing at traffic signals; it occurs just during a cold start. I am perplexed by this.

It operates flawlessly in every other respects. Any answer would be highly appreciated.

[SlayNeo]

In my experience, I have never operated a turbocharged vehicle without allowing it to warm up for at least one minute. If your car exhibits improved responsiveness post-warm-up, why not continue this practice?

What is the mileage, the date of the last oil change, and the last time the spark plugs were replaced? When was the latest occurrence of walnut blasting? Do you often patronise the same petrol station? Which mix do you utilise? What is the duration of this occurrence?

In the absence of more facts, it is challenging to provide a recommendation. You can consider visiting a garage to see whether any diagnostic codes are recorded.

[FreexPatty]

Greetings. I am now in New Zealand, and it has completed 80,000 km. Maintained every 10,000 km, operates on 98 octane fuel. Serviced 5,000 km ago, with spark plugs replaced concurrently. While warming up is beneficial, I maintain that it should not be performed in that manner. No codes available either.

[SlayNeo]

It amounts to 50,000 kilometres

It may need a whole turbocharger kit and extensive internal engine repairs; please consider this.

[FreexPatty]

Perhaps it is time to dispose of it.

[SlayNeo]

Pause for a moment... what is the rationale for disposing of it? Nearly every vehicle equipped with a timing chain requires periodic assessment for elongation. Once it surpasses the point of no return, it is time for replacement. However, the decision is yours. The optimal course of action is to have the tensioner inspected prior to proceeding, correct?

[Radiantecon]

Isn't the 2017 Clubman an F54 model?

I believed the last R55 was in 2015.

[Banman]

Possibly a typographical error; it may refer to 2007.