2007-2008 997.1 Porsche 911 Targa 4S

Overview

The 2007-2008 997 Targa 4S extended the motorized glass roof system to the higher-performance all-wheel-drive variant, combining 355-horsepower from the 3.8-liter naturally aspirated engine with the structural integrity and flexible open-air operation that the Targa configuration provided. The larger displacement engine and revised suspension calibration for the Carrera 4S positioning created a premium variant within the Targa lineup. The motorized glass panel, integrated into the fixed roll-bar frame, allowed retraction without compromising structural rigidity required for precise chassis tuning. The late introduction in the 997.1 production cycle—only two years of availability—reflected manufacturing lead times and market development requirements.

The Targa 4S designation indicated the combination of motorized glass roof with higher-performance all-wheel-drive specification, appealing to buyers seeking maximum performance combined with structural integrity and flexible open-air capability. This variant represented the apex of naturally aspirated all-wheel-drive performance with Targa configuration, offering comprehensive functionality without turbocharged complexity. The widened bodywork of 37 millimeters per flank accommodated larger wheels and tires while all-wheel-drive provided winter traction and year-round stability.

Engineering & Development

The 997 Targa 4S motorized glass roof mechanism employed identical electric actuation systems as Targa 4 variants, with no modifications required for the higher power output or widened bodywork. The fixed roll-bar structure remained unchanged, providing equivalent structural rigidity across all Targa configurations. The suspension geometry incorporated the revised calibration and bushing stiffness specific to the 3.8-liter all-wheel-drive specification, optimized for the elevated power output and widened track width.

The all-wheel-drive system distributed torque through viscous center differential with electronic limited-slip rear differential providing enhanced traction during hard acceleration. The widened bodywork with 37-millimeter track width increases per corner provided mechanical leverage for sustained cornering forces. Brake systems employed four-piston front calipers and dual-piston rear units proportional to the elevated power output. Water-cooled cooling system capacity received increases through improved radiator design supporting the higher power delivery.

Market Variants

The 997 Targa 4S appeared with updated exterior styling matching the 997 generation. The widened bodywork with integrated aerodynamic elements came standard. The glass roof panel came tinted as standard. Interior specifications included enhanced leather trim selections in multiple colors and textures. Transmission options included six-speed manual or five-speed Tiptronic automatic.

Wheel selections ranged from 18-inch baseline designs through optional 19-inch variants. Xenon headlights appeared standard. Electronic brake distribution, traction control, and tire pressure monitoring appeared standard. Audio system options expanded substantially, accommodating diverse customer preferences for sound quality and integrated capabilities.

Significance

The 997 Targa 4S validated that motorized glass roof systems remained compatible with higher-displacement naturally aspirated all-wheel-drive engines, combining responsive power delivery with structural integrity and open-air flexibility. The variant's limited availability—only two years of production—created exclusivity that established collector interest and premium secondary market valuations. The variant demonstrated that premium positioning remained viable within the Targa lineup despite manufacturing complexity.

The 997 Targa 4S captured a transitional moment when naturally aspirated power remained the dominant specification even for premium all-wheel-drive variants. The variant's late introduction and limited production reflected Porsche's manufacturing strategy of sequential variant introduction and emphasis on turbocharged variants in subsequent development. This variant established patterns that future 911 generations would continue, validating the Targa configuration as a permanent product tier while subsequent generations increasingly concentrated development toward turbocharged variants.