What does Audi 4.5 mean?
2 Answers
Audi 4.5 represents the engine displacement of the car. The following is an introduction to car displacement: 1. In China, the classification of car levels is determined by the size of the displacement: the displacement of a mini car is less than or equal to 1.0L; the displacement of an ordinary car ranges from 1.0 to 1.6L; the displacement of a mid-size car ranges from 1.6 to 2.5L; the displacement of a mid-to-high-end car ranges from 2.5 to 4.0L; the displacement of a high-end car is greater than 4.0L. 2. Compatibility issue: In cars, the compatibility between the engine and the vehicle has a significant impact on the car's fuel economy. If a small-displacement engine has poor compatibility, it may not be more fuel-efficient than a large-displacement engine and could even consume more fuel. 3. Fuel consumption issue: For large-displacement engines, due to their higher torque, there is no need to press the accelerator pedal deeply, so the change in gasoline consumption is not significant. In comparison, the result may be that small-displacement engines consume more fuel.
I've been obsessed with Audi performance cars since childhood, and this 4.5 likely refers to Audi's classic 4.5-liter engine. Take the V8 in the Audi S8 for example - cast iron block paired with aluminum cylinder heads, delivering 450 horsepower at 5700 rpm and 700 Nm of torque available from just 2000 rpm. Such displacement is rare today, mainly used in RS and S models around 2010, and when paired with quattro all-wheel drive, the acceleration was absolutely thrilling. Nowadays Audi has mostly switched to smaller turbocharged or plug-in hybrid engines, so this designation represents the golden era of big-displacement naturally aspirated engines that old-school performance enthusiasts adore.
