Entrance too steep? Height difference driveway/road

Hello everyone,

I am currently planning my house. It is located on a street with a slight incline. The plot has a length of 18.5m towards the street (height difference from the highest point to the lowest is 0.92 meters). The entrance of the house would be 8cm above the street level. A rain gutter will be installed in front of the entrance as a precaution. Now to the actual problem: The double garage is next to the house for "solar reasons." I am afraid that the driveway in its current form (see attachment) might be too steep. The garage door is 5 meters wide. The following height differences (from garage driveway to street) are currently planned by the architect:

far left: 0.5 meters (distance to the street 6 meters) -> 8.33% or 4.76 degrees slope
middle: 0.35 meters (distance to the street 5.8 meters) -> 6.03% or 3.45 degrees slope
right: 0.2 meters (distance to the street 5.5 meters) -> 3.63% or 2.08 degrees slope

What do you think? Am I worrying unnecessarily? Do you have any suggestions for optimization?

The handbrake should be ok. Where else is the problem? Tons of cars park on the roadside on roads with 8%.

My concern is that the driveway might be too steep for everyday use. When I drive through my town, I almost exclusively see flatter driveways. Another consideration was to set the house 5cm and the garage 10 (or 15cm) lower. This would reduce the slope of the driveway by 3% at each point.

My concern is that the driveway might be too steep for everyday things.

Everyday things like playing boules? The incline of the driveway is suitable for walkers. I would rather think about another detail: namely the monstrous parapet of the garage. That is a Waigel blue

Waigel roof fits Schäuble driveway
Sorry for the off-topic, but it had to be [emoji23]

Regards, Yvonne

Everyday things like playing pétanque?

The slope of the driveway is suitable for a rollator. I would rather think about another detail: namely the monstrous parapet of the garage. That is a Waigel blue

The monstrous parapet is only like that on the plan. I definitely want to make it more discreet. I am already driving around the area to find a similar driveway with the same inclines.