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1987 - 1991 Porsche 928 S4/GT

Click any of the pictures to see Model Year Comparison

928 S4/GT (1987 - 1991)

928 S4 Changes/Upgrades by Model Year

    1987 928 S4  VIN Range - WP0JB092_HS860001 - 2481

• Base MSRP up to: $58,900

• Power output increases to 316 bhp & 317 ft/lbs

• Single engine in all 928s worldwide

• New intake/induction system

• Updated front and rear bumpers

• New H4 headlights

• Updated fog lights

• Restyled rear tail lights

• Rear wing spoiler

• cooling flaps added in front of radiator to reduce drag

• Early 928 S4s have folding rear spoiler (Eliminated after very early production)

• Automatic shift program changed for second gear starts (hard acceleration starts will be in 1st gear)

• Curb weight = 3,550(auto)/3,505(5-spd)

• Wheels were 7x16 front and 8x16 rear flat disc with an offset of 65mm(front) and 52.3mm(rear) with 225/50 16(front) and 245/45 16(rear) tires

• VIN tags on all body panels

    1988 928 S4  VIN Range - WP0JB092_JS860001 - 1852

• No changes

    1989 928 S4/GT  VIN Range - WP0JB092_KS860001 - 1250

• 1989 928 GT base MSRP to: $74,545 + $1,300 gas guzzler tax

• 928 S4 automatic gets revised shift program (holds a gear longer when accelerator pedal is to the floor)

• Break pad wear indicators

• Radio antenna moved to roof

• Computerized dash read out reports miles, outside air temp, gas mileage, trip odo, miles to empty......

• 928 GT introduced as a late model year addition (It appears that the 928 S4 5M was still built during 89 GT production.  It is critical that claims of a 1989 928 GT be verified both visually and with option codes)

• 1989 928 GT production begins in March 1989 and ends in June 1989

• The earliest 1989 928 GT currently recorded has a VIN of 1107

• 1989 928 GT power increased to 326 bhp & 317 ft/lbs

• 1989 928 GT is differentiated from the 928 S4 in the following ways:

• 1989 928 GT is further differentiated from the S4 by the following options (option codes are located on the inside cover of and original owners manual or on a white sticker located in the rear hatch area opposite the spare tire and above the gas tank):

    1990 928 S4/GT  VIN Range - WP0JB092_LS860001 - 0581

• Base MSRP up to: $74,545 + $1,300 gas guzzler tax

• 928 GT(5-speed) power remains at 326 bhp & 317 ft/lbs while 928 S4(automatic) stays at 316 bhp & 317 ft/lbs

• Dual airbags appear in the 928 for the first time

• Tire pressure monitoring system (RDK)

• 928s with 5-speed are now GTs

• Design 90 style wheel introduced on the 928 (flat disk style wheels still available)

• Electronically controlled limited-slip differential (PSD) on all models

• Twin outlet muffler on both S4 and GT

• Wheels were 7x16 front and 8x16 rear flat disc with an offset of 65mm(front) and 52.3mm(rear) with 225/50 16(front) and 245/45 16(rear) tires

• Standard on 1990 and 1991 928 GTs and optional on S4s were 7x16(front) and 8x16(rear) "Design 90" style wheels with an offset of 65mm(front) and 52.3mm(rear) with 225/50 16(front) and 245/45 16(rear) tires

• VIN tags on all body panels eliminated

    1991 928 S4/GT  VIN Range - WP0AA292_MS810001 - 0448

• Shorter more ergonomic shift lever in the 91 928 GT

• Cooling flaps in front of radiator eliminated

• Improved door seals to reduce water dripping on occupants during rainy weather

Note:  Some of the information on this page came from www.928gt.com and www.928s4vr.com

If you have anything to add to this page or a correction needs to be made please let me know: Chuck@928resgitry.org

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