Icurrently have an 01 GTI VR6 and now want an Audi A4 with the 1.8T and 5-speed manual. So I was wondering, how reliable is the B5 A4 1.8T after 90,000 miles? What have you guys had to get replaced after 90,000 miles? How much did it cost to get done? I've got two mechanics that own their own shops, so I don't have to worry about 31. B5 Generation Engine Problems The B5 generation of the Audi RS4 was produced from 1999 to 2001 and is known for its powerful twin-turbocharged 2.7-liter V6 engine. While this engine was impressive in terms of performance, it did have some common issues that owners should be aware of. One of the most common engine BadWater Pump Signs: Audi A4. Here are the most common symptoms of a bad water pump in your A4: 1. Noise. A noisy water pump can indicate that it has a bearing that is going out. The problem with most engine noises is that they are difficult to hunt down. If your water pump is easy to reach, you can gently place a really long Whatproblems await you after buying a used Audi A4 (B5) '1994–2001.Common problems associated with a used Audi A4 B5 include faulty CommonB7 Audi A4 Engine Problems. Ignition Coil Pack and Spark Plug Failure; Carbon Build-Up in the Intake Valves; Excessive Oil Consumption; PCV (Positive Crankcase Vent) Valve Failure; V6 30v DOHC engine debuted in the B5 S4 in 1997 and ended production in the B6 A4 in 2003. This is not a very long-lasting engine from Audi, Lookunder the firewall for pink goo on the top of the transmission case. 3. Oxygen sensors are getting to the end of their life. Basically, these cars are fine until 120K miles give or take (timing belt and water pump should be done every 75K) and then things start unraveling. 32Automatic Transmission problem of the 1999 Audi A4. Immediately prior to switching from 3rd to 4th gear, the vehicle loses r. P. M. 's and power then catches and changes gears. It is only in this gear shift --3rd to 4th. I have contacted the manufacturer and they say it is within design parameters. 20015 Audi A4 1.8TQMS - Brilliant Black on Black Onyx Sport Cloth Motoza Hybrid K04 Tune, Frankenturbo F4-H Kit, Bosch EV14 550cc injectors, APR R1 Diverter 3 Transmission: The automatic transmission found in some Audi A4 B5 models were known to have issues with the torque converter, causing rough shifting or slipping of the 236 28K views 1 year ago. What are the most common problems and breakdowns used Audi A4 B5 1995 - 2001 Used vehicle, experience, issues, review of errors and recalls. QJzfayv.