The UK are introducing a new spec on fuel E10 which checking on the GOV.UK website doesn't make clear if a B5 engine from a 1997 spec is compatible or not?
The website states:E10 petrol is cleared for use in all Audi petrol driven vehicles, excluding the following vehicles:

• First generation direct injection engines:
• Audi A2 1.6 FSI, model years 2003-2005
• Audi A3 1.6 FSI, model year 2004
• Audi A3 2.0 FSI, model year 2004
• Audi A4 2.0 FSI, model years 2003-2004
• Audi A4 Saloon petrol engine models with OEM parking heater, of model years 2001-2008.
• Audi A4 Avant petrol engine models with OEM parking heater of model years 2002- 2008.

Any thoughts?