1998-2002 Audi A8 (D2 4D facelift ) 4.2 V8 40V (310 Hp) quattro tiptronic

The Audi A8 (D2) 4.2 V8 quattro tiptronic, produced from 1998 to 2002, represents a significant evolution of Audi’s flagship luxury sedan. This variant, part of the facelifted D2 generation (internally designated 4D), positioned itself as the high-performance offering within the A8 range, blending opulent comfort with substantial power and all-wheel drive capability. It built upon the groundbreaking innovations of the original D2 A8, introduced in 1994, which was the first mass-produced car to feature all-aluminum construction. The 4.2 V8 model catered to buyers seeking a more dynamic driving experience than the base 2.8L and 3.3L engines offered, while still prioritizing the luxury and refinement expected of a full-size Audi.

Technical Specifications

INTRODUCTION

The Audi A8 D2 4.2 V8 quattro tiptronic, produced between 1998 and 2002, was the performance flagship of the D2 A8 range. It represented a significant step up in power and driving dynamics compared to the 2.8 and 3.3 liter variants. The facelifted D2 (4D) brought subtle styling revisions and improvements to the interior, further refining the A8’s already luxurious character. This model was aimed at buyers who desired the prestige and comfort of a large luxury sedan, but also demanded strong acceleration and all-weather capability provided by Audi’s quattro all-wheel drive system. The “tiptronic” designation refers to the five-speed automatic transmission with a manual shift mode, offering drivers greater control over gear selection.

Powertrain & Engine Architecture

At the heart of the A8 4.2 V8 quattro tiptronic lies the AQF engine code, a 4.2-liter naturally aspirated V8 engine. This engine produced 310 horsepower at 6200 rpm and 410 Nm (302.4 lb-ft) of torque between 3000 and 4000 rpm. The engine features a 90-degree V-angle, contributing to its smooth operation and balance. It utilizes multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain with five valves per cylinder. The AQF engine is known for its robust construction and relatively simple design, contributing to its long-term reliability. The five-speed tiptronic automatic transmission, sourced from ZF, was a key component. It offered both fully automatic operation and the ability for the driver to manually select gears, providing a degree of control not found in traditional automatics. The transmission was designed to handle the substantial torque output of the V8 engine and deliver smooth, responsive shifts.

Driving Characteristics

The 4.2 V8 tiptronic A8 offered a markedly different driving experience compared to its lower-powered siblings. Acceleration to 60 mph was achieved in approximately 6.6 seconds, and the electronically limited top speed of 155 mph provided ample performance for highway cruising. The tiptronic transmission, while not as quick as a modern dual-clutch gearbox, offered smooth and predictable shifts. In automatic mode, it prioritized comfort and fuel efficiency, while the manual shift mode allowed drivers to exploit the engine’s powerband more effectively. The quattro all-wheel drive system provided excellent traction in all weather conditions, enhancing stability and confidence. However, the A8’s considerable weight (approximately 3858 lbs) meant that it didn’t feel as agile or sporty as some of its rear-wheel drive competitors.

Equipment & Trim Levels

The A8 4.2 V8 quattro tiptronic was generously equipped as standard. Features included leather upholstery, power-adjustable front seats with memory function, automatic climate control, a premium sound system, and a sunroof. Wood trim adorned the interior, enhancing the luxurious ambiance. Optional extras included rear seat entertainment, upgraded leather packages, and a navigation system. The A8 also featured a range of advanced safety features for its time, including ABS, traction control, and multiple airbags. The interior design was understated and elegant, focusing on quality materials and meticulous craftsmanship.

Chassis & Braking

The A8 D2 featured an independent suspension system on all four wheels, utilizing a multi-link setup at the front and a trapezoidal lever arrangement at the rear. This provided a comfortable ride while maintaining good handling characteristics. Stabilizer bars were fitted front and rear to reduce body roll. Braking duties were handled by ventilated disc brakes on all four wheels, providing ample stopping power. The ABS anti-lock braking system further enhanced safety by preventing wheel lockup during hard braking. The steering was a rack-and-pinion system with hydraulic power assistance, offering precise and responsive control.

Market Reception & Comparison

The A8 4.2 V8 quattro tiptronic was generally well-received by automotive critics. It was praised for its powerful engine, luxurious interior, and all-weather capability. However, some reviewers noted its high price and considerable weight. Compared to the 2.8L and 3.3L A8 models, the 4.2 V8 offered significantly more performance but at the expense of fuel economy. The 3.3L model provided a good balance between performance and efficiency, while the 2.8L was the most affordable option. The A8 competed with other luxury sedans such as the BMW 7 Series and the Mercedes-Benz S-Class. The A8 distinguished itself with its quattro all-wheel drive system and its innovative all-aluminum construction.

Legacy

The Audi A8 D2 4.2 V8 quattro tiptronic remains a desirable classic car today. The AQF engine is known for its durability and relatively straightforward maintenance. However, as with any older luxury car, preventative maintenance is crucial. Common issues include aging suspension components, electrical gremlins, and potential oil leaks. The tiptronic transmission, while generally reliable, can require expensive repairs if not properly maintained. Despite these potential issues, the A8 4.2 V8 continues to offer a compelling combination of luxury, performance, and all-weather capability, making it a popular choice among enthusiasts and collectors.