noobi alert i am considering an audi a4 or a6 avant, looking to spend £2000 ish, my main priority is good mpg, i do like a bit of performance but the roads ill be driving to work i wont get the opurtunity to drive it enthusiastically so ill go for the one with best mpg. I know the a4 is most popular, i think i would prefer an a6 as i like the bigger motors, i would go for an a4 for the right reasons and is its better mpg than the a6. what year and bhp models are recommended for more mpg in a4 and a6 on the 1.9tdi and 2.5 tdi, i read some models reach 50 mpg and this would do for me. what mpg can be achieved with each engine ? a saloon aint practical for me and theres no hatch version so ill be after an avant.