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The Audi A4 and high-performance S4 models have long been among the most respected sport sedans in the luxury compact segment. Known for their refined interiors, advanced Quattro all-wheel-drive systems, and strong turbocharged or supercharged engines, the A4 and S4 platforms offer a balance of everyday comfort and enthusiast-level performance. Across multiple generations, the A4 lineup has evolved with improved chassis technology, more powerful engines, and increasingly advanced electronics.
Thanks to their strong engineering foundation and extensive aftermarket support, Audi A4 and S4 models respond exceptionally well to upgrades such as ECU tuning, suspension improvements, forged wheels, braking upgrades, and performance exhaust systems.
At ModBargains, we offer a wide selection of performance parts and upgrades for the Audi A4 and S4, including suspension systems, forged wheels, brake kits, performance exhausts, and aerodynamic styling components designed to enhance both performance and appearance.
The B9 generation introduced a redesigned platform with improved chassis rigidity, reduced weight, and significantly upgraded interior technology. Built on Audi’s MLB Evo architecture, the B9 offers sharper handling and improved efficiency compared to previous generations.
The A4 features a 2.0L turbocharged inline-four engine, while the S4 is powered by a 3.0L turbocharged V6 engine paired with Audi’s Quattro all-wheel-drive system.
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The B9 platform provides strong performance potential, especially with ECU tuning and turbocharger upgrades.
The B8 generation introduced a completely redesigned chassis with improved weight distribution and refined driving dynamics. The A4 uses a 2.0L turbocharged inline-four engine, while the S4 features a powerful 3.0L supercharged V6 engine that delivers strong acceleration and excellent tuning potential.
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The B8 S4 remains one of the most popular modern Audi platforms for performance tuning.
The B7 generation refined the design and performance of the A4 platform while maintaining Audi’s signature Quattro all-wheel-drive capability. The A4 is powered by a 2.0L turbocharged inline-four engine, while the S4 features a 4.2L naturally aspirated V8 engine that delivers strong performance and a distinctive exhaust note.
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The B7 platform remains a favorite among enthusiasts thanks to its strong performance potential and classic Audi styling.
The B6 generation introduced a redesigned A4 platform with improved interior quality and enhanced chassis engineering. The A4 is powered by turbocharged four-cylinder engines, while the S4 features a powerful 4.2L naturally aspirated V8 engine paired with Quattro all-wheel drive.
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The B6 platform remains a versatile choice for enthusiasts seeking a balance of luxury and performance.
The B5 generation introduced the Audi A4 to the global market and quickly became one of the brand’s most influential performance platforms. The S4 variant features the legendary 2.7L twin-turbocharged V6 engine, which has become one of the most popular Audi engines for high-performance tuning.
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The B5 S4 remains one of the most legendary Audi tuning platforms thanks to its twin-turbo V6 engine and strong aftermarket support.
ModBargains offers a wide selection of performance parts and accessories for the Audi A4 and S4 platform, including:
From the legendary B5 S4 to the modern B9 generation, the Audi A4 and S4 continue to deliver luxury, performance, and strong tuning potential. Upgrade your Audi A4 or S4 with premium aftermarket parts from ModBargains to enhance handling, styling, and overall driving performance.