2020-2023 Audi A6 Sedan (C8) 45 TFSI (265 Hp) Mild Hybrid S tronic

The Audi A6 Sedan (C8) 45 TFSI, produced from 2020 to May 2023, represents a significant iteration of Audi’s mid-size executive car. This variant, equipped with a 2.0-liter turbocharged four-cylinder engine producing 265 horsepower and paired with a seven-speed S tronic dual-clutch transmission, occupies a central position within the C8 A6 lineup. It serves as a balance between the entry-level 40 TFSI and the more performance-oriented 55 TFSI models, appealing to buyers seeking a blend of efficiency, technology, and respectable performance. The “45 TFSI” designation doesn’t directly correlate to engine displacement but rather represents Audi’s internal performance tiering system.

Technical Specifications

INTRODUCTION

The Audi A6 Sedan (C8) 45 TFSI, launched in 2020, is part of the fourth generation (C8) of Audi’s popular A6 model. Built on the MLB Evo platform (shared with other Volkswagen Group vehicles like the Porsche Macan and Audi Q7), the C8 A6 represents a significant leap forward in technology and design compared to its predecessor. The 45 TFSI variant specifically caters to drivers seeking a balance between performance and fuel efficiency, utilizing a mild-hybrid system to enhance both. This model was sold primarily in Europe and other international markets, with the A6 range offered with varying engine and drivetrain options depending on regional preferences.

Powertrain & Engine Architecture

At the heart of the A6 45 TFSI lies the EA888 2.0-liter turbocharged four-cylinder engine, specifically coded DMTA or DPAA depending on the production year and market. This engine utilizes direct fuel injection and a single twin-scroll turbocharger, delivering a robust 265 horsepower and 370 Nm (272.9 lb-ft) of torque. The engine incorporates Audi’s Valve Lift on Demand (VLOD) technology, allowing for variable valve lift to optimize performance and efficiency. Crucially, this variant features a 12V mild-hybrid system. This system employs a belt starter generator (BSG) and a small lithium-ion battery to enable start-stop functionality, regenerative braking, and a limited degree of electric assistance during acceleration. The seven-speed S tronic dual-clutch transmission provides rapid and smooth gear changes, contributing to the car’s responsive driving experience. The S tronic transmission is known for its efficiency and quick shifts, but can sometimes exhibit a slight jerkiness at low speeds.

Driving Characteristics

The A6 45 TFSI offers a refined and comfortable driving experience. The 265 hp engine provides ample power for everyday driving and confident highway passing. Acceleration from 0 to 60 mph takes approximately 6.5 seconds. The S tronic transmission contributes to a seamless power delivery, although it may not offer the same level of engagement as a traditional manual gearbox. Compared to the more powerful 55 TFSI variant (with its V6 engine), the 45 TFSI feels less overtly sporty, but it compensates with improved fuel economy and a lighter front-end feel. The mild-hybrid system is largely transparent to the driver, working subtly in the background to improve efficiency. The gear ratios are tuned for a balance between acceleration and fuel economy, with taller gearing in higher gears for relaxed cruising.

Equipment & Trim Levels

The A6 45 TFSI typically came well-equipped as standard. Common features included Audi’s Virtual Cockpit digital instrument cluster, a 10.1-inch touchscreen infotainment system with MMI Navigation plus, leather upholstery, three-zone automatic climate control, and a suite of driver-assistance systems such as lane departure warning and automatic emergency braking. Optional extras included features like a Bang & Olufsen sound system, adaptive cruise control, a head-up display, and matrix LED headlights. Trim levels varied by market, but generally offered progressive upgrades in terms of interior materials, exterior styling, and technology features. Sport trim packages often included more aggressive styling cues and sport-tuned suspension.

Chassis & Braking

The C8 A6 utilizes a sophisticated chassis design featuring independent multi-link suspension at both the front and rear. This setup provides a comfortable ride quality while maintaining good handling characteristics. The 45 TFSI variant typically features ventilated disc brakes on all four wheels, providing ample stopping power. The standard steering system is an electromechanical power steering system, offering precise and responsive steering feel. Depending on the options selected, the A6 45 TFSI could be equipped with adaptive dampers, allowing the driver to adjust the suspension stiffness to suit their preferences. Stabilizer bars are fitted front and rear to reduce body roll during cornering.

Market Reception & Comparison

The Audi A6 45 TFSI was generally well-received by automotive critics. It was praised for its refined driving experience, comfortable interior, and advanced technology. Compared to its rivals, such as the BMW 5 Series and Mercedes-Benz E-Class, the A6 45 TFSI offered a compelling combination of features and value. Fuel economy was a strong point, with the mild-hybrid system contributing to real-world fuel consumption figures in the range of 30-35 mpg. Reliability has been generally good, although some owners have reported minor issues with the infotainment system. Compared to the higher-output 55 TFSI, the 45 TFSI offered a more affordable entry point into the A6 range, making it a popular choice for buyers prioritizing efficiency and comfort over outright performance.

Legacy

The Audi A6 C8 45 TFSI represents a well-rounded and technologically advanced executive sedan. The EA888 engine, while not without its occasional issues (such as carbon buildup), has proven to be a durable and reliable powerplant when properly maintained. The S tronic transmission, while requiring occasional servicing, is generally considered robust. On the used car market, the C8 A6 45 TFSI holds its value reasonably well, thanks to its reputation for quality and refinement. Its mild-hybrid technology, while not as advanced as full hybrid or electric powertrains, was a significant step towards greater fuel efficiency and reduced emissions, setting the stage for Audi’s future electrification efforts.