
A8 has a total of 5 models on sale. Among them, the 2022 A8L 60 TFSI quattro Premium Collection Edition is equipped with a 460-horsepower engine, with an NEDC fuel consumption of 11.1L per 100km. The 2022 A8L 50 TFSI quattro Comfort Collection Edition and Luxury Collection Edition are equipped with a 286-horsepower engine, with an NEDC fuel consumption of 8.6L per 100km. The 2022 A8L 55 TFSI quattro Premium Collection Edition and Luxury Collection Edition are equipped with a 340-horsepower engine, with an NEDC fuel consumption of 8.6L per 100km. The fuel tank capacity of the Audi A8 is 82L. The distance each model can travel on a full tank of fuel is as follows: For models equipped with a 460-horsepower engine, the distance on a full tank is 82/11.1100=738km. For models equipped with 286 or 340-horsepower engines, the distance on a full tank is 82/8.6100=953km. The fuel consumption of a car is directly related to five major factors: driving habits, the car itself, road conditions, natural wind, and environmental temperature. Specific factors that increase fuel consumption are as follows: Driving habits: Aggressive driving, such as sudden acceleration, frequent overtaking, and not easing off the throttle before a red light, will increase fuel consumption. The car itself: Cars with larger engine displacements generally consume more fuel than those with smaller displacements because larger displacements usually mean higher power, requiring more gasoline to burn and perform work. Heavier cars also consume more fuel because greater weight requires more driving torque. Road conditions: Driving on dirt roads, muddy roads, soft surfaces, or mountainous roads increases resistance and fuel consumption. Natural wind: Driving against the wind or on windy days increases car resistance and fuel consumption. Low environmental temperatures: When the engine block is cold, the injected gasoline does not atomize easily during cold starts, requiring more gasoline to burn, which increases fuel consumption. Additionally, low temperatures prompt the engine computer to control higher RPMs to warm up the car, further increasing fuel consumption.

I've driven the A8 for several years, and the fuel consumption varies significantly between different versions. The 2.0T four-cylinder A8L is the most fuel-efficient, averaging about 8-9 liters in the city and just over 6 liters on the highway. The more common 3.0T V6 version consumes around 10-11 liters during daily commutes, but can rise to 14 liters in heavy traffic. The top-tier 4.0T V8 model consistently consumes over 13 liters, though its power is truly impressive. Fuel efficiency is heavily influenced by driving style—using Comfort mode saves about 2 liters compared to Sport mode, and the start-stop system also helps. A full car or a loaded trunk can increase consumption by half to one liter. Additionally, the quattro system, while stable, does consume more fuel than front-wheel-drive models. I recommend paying attention to the dashboard readings when refueling; after about 5,000 kilometers, you’ll generally understand your car’s fuel consumption patterns.

Last week, I accompanied a friend to test drive the new A8, paying special attention to its fuel consumption. With the air conditioning on in the city, the 3.0T version showed around 11.5 liters per 100 km. On the highway at a steady speed of 110 km/h, the fuel consumption dropped directly to 7.8 liters. This car is quite interesting as the fuel consumption is noticeably linked to the driving mode: in Economy mode, the throttle response is a bit sluggish but it does save fuel, while in Sport mode, the revs are higher and the fuel consumption immediately jumps to 13 liters. Here's a lesser-known fact: using the air conditioning in summer consumes more fuel than using the heater in winter, with a difference of over 1 liter. Tire pressure is also crucial; my friend's car had insufficient tire pressure, which increased fuel consumption by 0.5 liters. The fuel tank holds about 83 liters, allowing for over 900 kilometers on pure highway driving, while for daily commutes, refueling is typically needed every two weeks.

Comparing the fuel consumption between the 2020 and 2024 A8 models, technological advancements have indeed made noticeable improvements in fuel efficiency. The older V6 engine typically started at 10 liters per 100km, while the new model, equipped with a 48V mild hybrid system, not only offers smoother start-stop functionality but also reduces fuel consumption to the range of 8.5-9.5 liters. The body materials have also been upgraded, with components like the hood switched to aluminum alloy, resulting in a weight reduction that saves approximately 0.7 liters per 100km. The new 8-speed transmission is particularly intelligent, with proactive gear shifts that maintain low RPM operation, a feature most evident during highway cruising. However, the larger side mirrors on the new model slightly increase the drag coefficient, causing a minor rise in fuel consumption at speeds above 120 km/h.

I noticed the fuel consumption of the A8 is similar to the BMW 7 Series and Mercedes S-Class, but changes in driving habits show immediate effects. Last time I drove the A8 from Beijing to Tianjin maintaining a steady 100 km/h cruise speed, the displayed fuel consumption was only 7.2 liters. But when stuck in heavy traffic idling for half an hour, the instantaneous fuel consumption shot up to 15 liters. I recommend avoiding peak hours in city driving, minimizing hard braking. Don't set the AC to maximum fan speed - 24°C auto mode is most fuel-efficient. Remember to clear out trunk clutter; every extra 50kg adds about 0.3L/100km. Regular maintenance is crucial - I change spark plugs every 20,000 km and clean the air filter every 5,000 km to keep the engine in optimal condition. Another tip: use genuine motor oil as aftermarket oil can easily increase fuel consumption.

The official fuel consumption for the A8 is stated as 7-9 liters per 100 km, but in reality, it's generally around 2 liters higher. The test was conducted under ideal conditions at a constant speed without air conditioning. In real-world scenarios, fuel consumption can double when waiting at red lights or during traffic jams. The onboard computer's instantaneous fuel consumption display is particularly intuitive—you can see the needle jump above 20 liters every time you accelerate from a red light. Electrical devices in the car also consume a lot of fuel; running seat ventilation and the audio system at full blast can add an extra 0.8 liters per 100 km. Fuel consumption stabilizes after the break-in period. Before my first service, my new car's fuel consumption was around 12 liters, but after 8,000 km, it dropped to about 10.5 liters. For long-distance driving, using cruise control is recommended, as the system controls speed more precisely than human input, leading to noticeable fuel savings. Finally, if you're buying a car in this class, don't stress too much about fuel costs—safety and comfort are more important.


