I have Platinum status with SIXT (via a status match), and haven't used them before...I'm an Exec Elite (top-tier) at National, so I've got some options for my upcoming Friday-Monday rental at LAX...

Hoping someone can help here with my decision...

PREMIUM CLASS
Mercedes-Benz GLC or similar
SUV | LFAR

PREMIUM CLASS
BMW 4 Series Convertible or similar
Convertibles | LTAR

I'd really like to book one of these 2 cars, but I'm curious if this is a bit of bait-and-switch? If I book the LTAR, is it likely I'd actually receive a 4-series convertible? Or are other cars in that class things like a Mustang convertible?

I normally just go with National and pick my favorite car on the lot, but these rates are enticing if their fleet truly is what they're indicating on the website.

Thanks in advance!