My list of differences between the Clio 16v and Williams1/2/3.
Williams 1, 2 & 3 Differences
Standard For All Williams Models
* Oval Plate number for Williams is C57M. The 16v is C57D.
* 150bhp, 2.0 16v Engine.
* Wider Front Track than the 16v, Uprated Suspension front and rear than the 16v.
* Williams Badges on Rear Arches and Tailgate. Williams 1 says "Williams", Williams 2 says "Williams 2" and Williams 3 says "Williams 3"
* Williams sill plate in black
* Gold wheels with the silver rim - the same wheels across all Williams'.
* Williams Stitched interior with lumbar support and height adjustment
* Blue Seat Belts
* Carry Case attached to Parcel Shelf
* No Brake Coolers like found on the 16v
* Blue Dials (Speedo, Rev Counter, Oil Pressure, Oil Temperature, Oil Level, Coolant Temperature)
* Blue Gear Knob
* Blue Carpet in main cabin area
* Slightly larger than 16v, colour-coded rear tailgate spoiler
* Electric Windows, Power Steering, Central Locking
* Oil Cooler fitted, the 16v didn't have one
* Uprated front subframe than the clio 16v subframe
Clio Williams 1 - Produced 1993/94 (L) - 390 Manufactured for the UK
* Based on the Mk1, Phase1 Clio's. (1991 - 1994)
* Small Bump Strips, 2.0 badge round side repeaters
* Flat looking rear lights with black plastic strip
* Badges (Renault and Clio) are on the boot strip.
* Slated Front Non Colour-coded Grill
* Phase1 16v Mirrors but manually controlled
* Phase1 Heater Controls
* Blue Carpet throughout including boot carpet!
* All were Sports Blue (449)
* Only 4" Dash Speakers in front (no rear speakers)
* Plaque to show number of car (as limited run)
* Williams Badges are an Outline, and not filled.
Clio Williams 2 - Produced 1994/95 (M) - 482 Manufactured for the UK
* Based on the Mk1, Phase2 Clio's. (1994 - 1996)
* Larger, more rounded bump strips - with 2.0 badges
* More Rounded Rear Lights and Boot Strip to match
* Badges (Renault and Clio) are on the tailgate now.
* Colour Coded, different style Grill
* Phase2 Electric/Heated Mirrors
* Phase2 Heater Controls
* Again, All Sports Blue 449.
* Only 4" Dash Speakers in front (no rear speakers)
* Revised Williams Stickers
Clio Williams 3 - Produced 1995/96 (N) - 308 Manufactured for the UK
* Based on the Williams 2 (Mk1, Phase2 Clio)
* Electric door mirrors
* Introduction of door speakers (5 1/4")
* Introduction of rear 4" speakers
* Change of colour to Monoco Blue (432)
* ABS as standard
* Electric Sunroof as standard
* Williams badges seem a brighter gold and a deeper blue infill.
* Blaupunkt headunit & Steering Wheel Stereo Control
* Revised Dashboard illumination
* Revised Williams Stickers again