For personal and consumer loans, interest rates are at an all-time low. Most consumers are paying between 4% and 6% APR. Some credit platforms such as Smava, Check24 and Finanzcheck are advertising negative interest rate loans where you are effectively paying - 0,99% APR - in other words: banks are giving away money for free.
Looking at the wider market, especially for online loans, the standard interest rates are ranging between 1,99% APR and a maximum of 19,99% APR for peer-to-peer platforms. With good credit you will be in the expected 4% to 6% APR range whereas lower credit scores and incomes will yield a higher interest rate.
Credit cards are still the most expensive in Germany with interest rates ranging between 14% and 19% APR for overdrafts and revolving credit limits.