Model Year 1996
Central locking and Anti Theft Warning System changed to radio remote operation
Airbag system altered from pyrotechnic type to hybrid version.
Air conditioning with climate control introduced.

Model Year 1997
Height adjustable steering column added
Side airbags introduced
New style plastic fuel hoses fitted
Steering wheel remote control function added

Model Year 1998 (note - mini face lift)
X20DTH Diesel engine added to range
X20XEV modified to add balance shafts
Sports seat with side airbags added
Estate rear headrests modified to allow them to be folded forward instead of removed when folding rear seats down.
Car level control sensor changed to programmable type to allow different level settings to be programmed via tech 2
ABS5.3 system fitted. 4 channel system which supports TC/stability program on V6 units
Ellipsoid headlights added with both Halogen and HID options
Instrument panel updated to support programming via tech 2, some indications are moved and fog light tell tails added.
Positive distribution fuse box added above battery
Park lock added to auto lever to drive can not be selected when brake pedal is pressed.
CCR800 with Bose added to audio system range
Satnav system available as option
On star service added (never seen this fitted in this format!)
Self adhesive VIN sticker added to drivers B post.
X30XE engine has modified intake and plenum setup, updated ECU software and modified rear silencer with reduced back pressure.
AR25/35 gearboxes have modified selector switch, new control unit, new electrical connector and modified torque converter.

Model Year 1999
Manual gearbox transmission fluid changed
V6 cam-belt setup changed, lower idler moved and new tensioner/idler backplate introduced.
Paper element oil filter fitted to V6
V6 engine sump seal changed to liquid gasket
3.0 V6 block casting changed to reduce oil consumption
Opelfix child safety system added
CCRT700 radio system added