Hi Mustachians,
I am considering switching my VW TRoc for a Tesla (3 or Y) and I make some calculations that I hope to refine with your feedback, wishing that this also comes in handy for other Mustachians who are about to make a similar decision.
You will tell me that getting a Tesla is not the best Mustachian move but, unless I am off somewhere in my analysis, it looks promising. Here is the spreadsheet:
[TCO Analysis] (TCO: VW vs Tesla  Google Tabellen)
Contrary to some analyses out there, it turns out to me that:

Switinch to a Tesla is more costefficient than keeping my VW TRoc

Financing it with a Loan is the best option. The biggest advantages of a Loan are:
 Deducting from my taxable income the yearly loan payments of ~8K CKF with a marginal tax rate of ~35% I get back ~2.7K CHF per year
 Selling my current car worth ~30K CHF and putting 20K CHF into stocks at ~5% return. The remaining 10K CHF is for the downpayment.
What are your thoughts? What did I miss?
Happy for face punches that help me make the right decision!
Thanks, guys!
P.S:
I tried to make the spreadsheet selfexplanatory but just in case some references are needed:
 Data table is the source data I used in the analysis
 Summary of cost table summarizes all direct costs, depreciation, and some other minor costs (these minor ones were not taken into consideration in the analysis as they were minor)
 Depreciation table: 15K annual milage, AVG depreciation rate at 5% and 6% for VW and Tesla respectively.
 Casflow Analysis: Colum U is the NET value of this 5year (assumed) project
 Cash: T Roc vs Tesla Model 3 only
 Loan: Model 3 vs Model Y
 Leasing: Model 3 vs Model Y, here I did not consider the option of purchasing the car at its residual value as I am not sure this is actually possible.