Here is the full list of all 23 Jalopy achievements.
Max out the odometer
Read Uncle's letter in his suitcase in Turkey
Dispense 550 Marks into the Turkish economy
Dispense 500 Marks into the Bulgarian economy
Read Uncle's letter in his suitcase in Bulgaria
Dispense 400 Marks into the Hungarian economy
Drive 100,000 KM
Drive 50,000 KM
Drive from Germany, to Turkey, and back to Germany in one session.
Use the horn till it burns out
Dispense 350 Marks into the CSFR economy
Read Uncle's letter in his suitcase in Yugoslavia
Dispense 450 Marks into the Yugoslavian economy
Read Uncle's letter in his suitcase in Hungary
Smuggle 6 bottles of wine through a single checkpoint
Drive 10,000 KM
Dispense 300 Marks into the East-German economy
Experienced karma
Read Uncle's letter in his suitcase in Germany
Run out of fuel
Read Uncle's letter in his suitcase in CSFR
Cleaned the car 50 times
Experienced a really big collision