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Hello,

I am looking to purchase a B5 RS4 and now i have 2 cars in my list, one with ASJ Engine number and the other one with AZR code.

I do understand the difference between the both (Euro2 and Euro3) standards, however are there any down or upside from each one or it doesn't make a difference?

Moreover are there any special places i should take care or check when choosing for the car in general?

Thanks

ASJ engine is the first engine produced , corresponding to EURO2 regulation , then around week 47 in 2000 , production of the AZR engine for Euro3 emission regulation