There might be some small discrepancies as this is off the top of my head.
2008-2009 pp ..........
LSD part of PP
stiffer suspension
Alacantara steering wheel
uprated brakes
2010 ppp
NO LSD as standard- separate option
NO stiffer suspension, all models have the same
Uprated brakes- red calipers
Alacantara steering wheel
Carbon fibre spoiler
"Same" forged engine as in the SLS, 480bhp on paper, but most make nearer 500bhp in reality.
2010 models had different mirrors on too.
2011...full facelift time
Interior changes
Command different- better.
Better I-pod interface etc, improved nav etc etc
Different dash layout
Bumpers different
Bonnet different
Lights
Gearbox- no longer torque converter. NOw uses wet clutch, much much better. No slur between changes. More responsive
2011 onwards ppp
Forged higher output engine
Carbon spoiler etc
Uprated brakes- red calipers
Part alacantara steering wheel
LSD again is an option.
19" multispokes were an option on all years
Carbon packs options available.
Drivers pack option basically cost approx £2.5k for speed limiter lift from 155 to 175 and a brooklands driving experience. Ripoff
Best bet is to give me the reg of the car and ill tell you everything its got or not
