That looks like a generic fault code reader which will only connect to engine, it will not read suspension controller or any other units in the car, only engine.
If you want something cheaper than VCDS check out OBDeleven or Carista. Not used CArista myself but OBDeleven is OK.
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Currently 8less
2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D
8 history:
2006 A8 Sport 4.2TDI quattro SOLD,
1997 S8, reached end of life with gearbox failure
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