Refreshed model due out before the end of the year.
Audi is in the midst of refreshing the A6 range, and our spy photographer was able to capture the range-topping RS6 Avant undergoing winter testing. Having been on the market since 2011, Audi is simply giving the high-performance wagon a minimal nip and tuck. More significant changes will happen on the inside, with a host of new tech goodies expected to adorn all models in the range. The refreshed A6 lineup should debut before the end of the year.