The best replacement for a5 is s5.

The best alternatives to a5 are rated as following:
★★★★★  s5
★★★  x7
★★★  maxus
★★  a6
★★  a4
★★  g37
★★  a7 chip
★★  335i
★★  a7
★★  4 series
★★  98 custom
★  bmw 335i
★  a5x
★  a7 ipad
★  335
★  a6 chip
★  x7 phenom
★  98
★  tt
★  328i
★  personal filofax
★  s4
★  a6x
★  a7 processor
★  a6 audi
  a4 audi
  custom 98
  infiniti g37
  b5
  428i
  bmw 328i
  a7 apple
  a5+
  bmw 335
  3 series
  tegra 2
  bmw 3
  audi a6
  a7 ipad mini
  smart parts ion
  a6 processor
  a4 bigger
  a4 paper
  audi s5
  a6 bigger
  bmw 3 series
  benelli
  zeppelin
  spyder electra
  a2
  clk
  a308
  3 series coupe
  5 series
  audi tt
  autococker
  bmw 328xi
  328
  tegra 3
  335xi
  135i
  bmw 335xi
  custom pro

Your alternative for a5 is not listed? Suggest!
Speaking about a5, one probably shouldn't forget about e grip.

Other search terms related to a5 and their ratings are:
★★★★★ e grip
★★ e-grip
★★ apex barrel
★ s8
You have in mind a companion for a5 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of a5 in all years. Click on graph for more.
a5
s5
x7