Auto stop/start when towing with an automatic

Every car i have ever owned since 1978 has been fitted with stop-start, it is sometimes called the ignition key... and the two cars fitted with a factory stop-start were both set up to disengage when towing. If i am likely to be stationary for an extended period i can still use my brain to decide if and when to stop the engine. 

Looking on the web suggests there are ways & means to switch it off permanently ..... 😉

The stop/start function helps manufacturers meet emission and fuel consumption targets, so it is a compromise against engine wear. My car disables the stop/start function when cold, but also when towing,

I would agree that if you are towing (not only in hot weather) that the function should be switched off even manually, as I expect most of you are not towing your vehicle in stop/start conditions through a busy town. If you are, pick an alternate route.

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Presumably stop start increases the demise of the vehicle batteries ...

and starters & cam chains where fitted

Our neighbour has  had a KIA Sportage  diesel auto for just over two years ,with start stop and commutes to Essex via M25 nearly every day then on the road for his job ,and has done over 60.000 miles so far and has never said he has had any excesive wear, on the car but has said his fuel consumption is better,than his previos sportage with same drive train

If he's on the motorway all day then the stop/start isn't going to happen ..... 🙄.

The fuel consumption on my ML350 (with stop/start) is the same as that on the R320 it replaced and its fuel consumption is better ..... but I switch the stop/start off each time. Does that prove something?

MM the M25 is a large car park so traffic is often at a standstill.

Stop start cars have different batteries than cars without it.

i always switch stop start off when towing

re M25 Of course .... I didn't think of that 

re Batteries . I know😉  and I think that's why my car has two of them 🤔

re stop/start ..... I always switch it off. 😏

Have you been on the M25 at peak times?,

or anywhere in this area at most times ,it is better when the "school runs" for the legless ones is not on

It is even worse south of the Thames