If the airport were to hang up, then the customer service (or lack of) is systemic. Again, given a choice of same vehicle but Sixt charging 10-40% more, how is Sixt the best (from a customer perspective)? But that's a rhetorical question.

It still does not address all the other options the agent could have used to defuse the issue. Bottom line is that agent provided bare minimum service and Sixt passing a voice navi only car as navi in 2013 and charging full premium for it.

I'm glad you mentioned efficient Germans. How is it that with Hertz and Avis Germany, their pickup process is:

1.) Give them my license.
2.) Pull out contract and keys out of drawer and I'm on my way. Hertz does not require signature for #1 Gold.

Upon return Hertz Germany cuts you a receipt on the spot (at airports).

Yet with Sixt in multiple locations both airport and non-airport (with an platinum/express booking):

1.) Give them my license, credit card, and passport (if I have not rented from that particular location).
2.) Sixt physically swipe credit card despite having that info when booking was made.
3.). Grab key from drawer.
4.). Print contract and ask for signature. Hertz/Avis pre-print this in advance.

Upon return you wait 48 hours to get a receipt even at airport and with a Sixt employee at the return aisle.

Just to provide a frame of reference on what Sixt's competitors offer in the customer service department:

Hertz FRA - Hertz gave me a S60 with Navi but no one knew how to switch navi to English. Agent didn't have another car avail but offered a discount for the rental on the spot. I drove the car from T2 to T1 where Hertz swapped with C class with Navi (which was what I had reserved) and let me keep the discount.

Enterprise MAN - Their website didn't ask for flight info. As a result, when I arrived, the car was in the other terminal (10 min walk). Agent called to have someone drive it over instead of having me walk. 35 minutes later the car still did not arrive. Manager immediately told me to return the vehicle without refueling it.

Hertz DUS Hbf - Reserved 5 series. No car avail. Lack of initiative in customer service department until I suggest they call the airport. Airport didn't have vehicle but Hilden did. Hertz paid for cab ride to Hilden location. After rental, I wrote the Hertz CS and they provided a $100 USD rental certificate.

This is the standard Sixt should be exceeding (especially because they charge more) if they are to be the best.

see, this is what you are expecting.

I expect 335i, Golf GTI, 750/760Li, 535d.
and I am happy to write a one line email after each rental to the customer service, that the price should be adjusted for whatever reason. and within one hour, I'll get the reply which I expect.

now let's come to email communication with Hertz, Avis and Europcar.

but, oh, there is not even an email adress.

coming to the point: Sixt probably has twice the market share than the other competitors. The conclusion would be: germans dont care about customer service, they want great cars.

Sixt can do that, the others don't.

actually, it is a bit more complicated: Sixt lets you feel, you get one of the great cars they have in their fleet. as a normal customer, however, usually you won't get them :)

Your reply makes no sense whatsoever.

Hertz has email and phone for customer service.

Had they provided a great car, this thread wouldn't exist....

I think we just have to agree to disagree.

try the german Hertz customer service, please.

I said already, that Sixt Germany is so successful, because it makes you think you will get one of the great cars. obviously, you dont.

let's finish it with: I am happy with sixt, you are happy with hertz and that's it.