The increase in value is probably clear, although of course you never really know. On the one hand, at the time of purchasing the apartment, there was a loan running and a court case due to a "botched construction," which certainly deterred potential buyers. On the other hand, there was no kitchen installed and there was still carpet in the children's room. Now there is a branded kitchen installed and parquet flooring in the children's room. And the garden (250 sqm) also looks tidier now.
Without knowing the exact apartment or the situation, it is of course not possible to judge precisely... The kitchen and parquet flooring in the children's room may have a new value of about 10k, but 3-4 years old? And don’t forget the house itself has also aged 3-4 years during that time... Among many "prospective buyers," a much greater "energy awareness" has developed in recent years... In 2008, insulation etc. was not as much in focus as it is today... How your apartment looks from an energy perspective is more interesting than the kitchen or the flooring... Of course, you can hope for the 155k€, but I would calculate with less...
The car will then be paid off when it no longer eats up our entire equity. That is why it was also partly financed by a loan and not fully as you wrote. We just like to have the occasional reserve.
It probably wasn’t exactly a bargain if the loan still amounts to 18,000 and it wasn’t even fully financed... did the car salesman push a brand-new A4 on you? ;)
A reserve is indeed sensible... but 15,000? Would half not do as well? Of course, it always depends on the investment and the interest rate of the car loan...