Based on the search results, there are different AA rates per kilometer depending on the purpose and location. Here are the key findings:

• The AA rates calculator on the AA website can be used to calculate the AA rate for monthly petrol reimbursement.
• The prescribed rate per kilometer for business travel is R4.18 for the 2022-2023 tax year.
• The rates set out below apply for the 2022-2023 income year for business motor vehicle expenditure claims. The Tier 1 rate is a combination of the vehicles fixed and running costs. Use it for the business portion of the first 14,000 kilometers traveled by the vehicle in a year. The Tier 2 rate is for running costs only. Use it for the business portion of any travel over 14,000 kilometers in a year.
• The AA adds 12% to the running cost only if the vehicle is a 4x4. Then the AA adds 18% if used unloaded and 25% if used loaded.

Therefore, the answer to the question "what are the AA rates per km 2023?" is that it depends on the purpose and location. The prescribed rate per kilometer for business travel is R4.18 for the 2022-2023 tax year, and there are different rates for business motor vehicle expenditure claims depending on the distance traveled. The AA rates calculator on the AA website can be used to calculate the AA rate for monthly petrol reimbursement.