My first Porsche, critique my spec

[Petzi]

That sounds like SA hogwash!

The configurator will update the range as you build your car.

Base Macan EV no extras 399 miles.

Base Macan EV with insulated glass 399 miles.

Base Macan EV with rear wiper 399 miles.

Base Macan EV with 22" wheels 378 miles.

In summary, neither glass or wiper make a material difference to WLTP range estimates.

i really can’t comprehend why there is even an ongoing debate over this! what ever the configurator say. the rear wiper must reduce the range. its basic physics. the insulated glass must extend range, its basic physics. i am aware that personal opinions beats physics in our time, but this discussion is really common sense versus opinion.

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[W1NGE]

i really can’t comprehend why there is even an ongoing debate over this! what ever the configurator say. the rear wiper must reduce the range. its basic physics. the insulated glass must extend range, its basic physics. i am aware that personal opinions beats physics in our time, but this discussion is really common sense versus opinion.

Yes but the point (which I think you missed) is that the advice given from an SA was '25 miles'.

Clearly everything will impact range - weight of person driving it for starters never mind the myriad of options which will have an impact - anything from wheel size to 4-zone AC.

Porsche only made the wiper an option to tick both a drag CoE box (best in class presumably) and to eek out some metres of range to be 'the best'. This totally ignores the practicalities of lying water on a rear window with no wiper when only driving around town...

Porsche (who ought to know) don't express any relative merits or demerits of these options such as promoting range due to having insulated glass over non-insulated glass (for example). If it truly was material then this option should be standard as should any range enhancing option.

If you can provide accurate real world measurements of range extension / reduction with glass type and wipers then we'd all love to hear it.

 

[Petzi]

Yes but the point (which I think you missed) is that the advice given from an SA was '25 miles'.

Clearly everything will impact range - weight of person driving it for starters never mind the myriad of options which will have an impact - anything from wheel size to 4-zone AC.

Porsche only made the wiper an option to tick both a drag CoE box (best in class presumably) and to eek out some metres of range to be 'the best'. This totally ignores the practicalities of lying water on a rear window with no wiper when only driving around town...

Porsche (who ought to know) don't express any relative merits or demerits of these options such as promoting range due to having insulated glass over non-insulated glass (for example). If it truly was material then this option should be standard as should any range enhancing option.

If you can provide accurate real world measurements of range extension / reduction with glass type and wipers then we'd all love to hear it.

First, let's separate "individual" factors of range, such as driving style, weight of passengers and cargo, etc., from the capabilities of the vehicle. Actually, I don't care if someone "believes" in the benefits of thermal insulation or not. I can't and won't scientifically "prove" how big a factor it is in this case. But I do have a theory as to why the configurator does not take this into account. If you read the specifications and basics of the two common range tests, you will see that these tests are done assuming "normal" outside temperatures. Otherwise, there would be different consumption values for each season (which would save us a lot of equally pointless debates about the range of EVs at -20 degrees. What a surprise for some of us!!). Obviously, the insulating glass has no effect when the outside temperature is the same as the desired inside temperature. But in more extreme conditions (very cold/very hot), the car needs to be heated or cooled, which requires a lot of energy, as an electric motor cannot do this "for free". It should be obvious to everyone that insulation can save a lot of energy. If this were not the case, there would be no need to insulate a building.

 

[srmacan]

First, let's separate "individual" factors of range, such as driving style, weight of passengers and cargo, etc., from the capabilities of the vehicle. Actually, I don't care if someone "believes" in the benefits of thermal insulation or not. I can't and won't scientifically "prove" how big a factor it is in this case. But I do have a theory as to why the configurator does not take this into account. If you read the specifications and basics of the two common range tests, you will see that these tests are done assuming "normal" outside temperatures. Otherwise, there would be different consumption values for each season (which would save us a lot of equally pointless debates about the range of EVs at -20 degrees. What a surprise for some of us!!). Obviously, the insulating glass has no effect when the outside temperature is the same as the desired inside temperature. But in more extreme conditions (very cold/very hot), the car needs to be heated or cooled, which requires a lot of energy, as an electric motor cannot do this "for free". It should be obvious to everyone that insulation can save a lot of energy. If this were not the case, there would be no need to insulate a building.

This is a very sensible and cogent explanation and I happen to agree with this. Just to throw it in there according to Porsche the insulated glass is lighter by up to 2kgs. All this may provide marginal gains with regards to range but hard to argue against interior comfort at temperature extremes.

 

[bbmertz]

@pearson1995, leaving rear wiper and insulated glass range debates aside, have you decided how you will modify your build?

 

[cometguy]

Here's my 2-cents worth: I would not get the red interior; it gets dirty really fast and looks really ugly when it does. In a BEV, I'd always opt for the smallest wheels -- better range, better ride, better safety, cheaper to change. Here in the USA, we cannot get an all-metal roof like you apparently can; I'd do that and not put up with the potential of the roof glass to break/leak, add more heat/light than you want, and deal with the pain of keeping it clean. Likewise, air suspension is forced as standard on us here in the USA; I would go for steel suspension, because air suspension can and will break, and from my experience with five Porsches with both types of suspension, it's not worth getting the air suspension in my honest opinion. I wouldn't get Innodrive, but would get ACC. I would keep the base sound system (I've had both Bose and base, and the Bose is way over-rated and the base system way under-rated).

 

[Awaz]

@cometguy
Sensible suggestions from an experienced Porsche owner.

 

[pearson1995]

@pearson1995, leaving rear wiper and insulated glass range debates aside, have you decided how you will modify your build?

Hi, yes this was a really helpful thread, thanks to everyone who contributed. I went for a test drive, and in the end I decided to go for the Turbo, and like this:

https://porsche-code.com/PSQXB5J5

hope to collect in the summer. Very excited.

 

[bbmertz]

Congrats — looks great!

 

[Petzi]

Hi, yes this was a really helpful thread, thanks to everyone who contributed. I went for a test drive, and in the end I decided to go for the Turbo, and like this:

https://porsche-code.com/PSQXB5J5

hope to collect in the summer. Very excited.

Beautifull car ! Gratulations.

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