What does 45TFSI mean on the back of an Audi car?

2 Answers
LeAriel
09/01/25 6:02am
The 45TFSI on the back of an Audi refers to a numerical value representing the car's acceleration. Below is a detailed explanation of what 45TFSI on an Audi signifies: 1. 45TFS represents a numerical value of the car's acceleration, calculated using a specific formula. The formula is: G=100000m/3600s/0-100km/h acceleration time*10. Substituting the data: 45=1000/36/t*10, the calculation results in t=6.17 seconds, approximately 6.2 seconds. This is how the value is derived. 2. The 45TFSI version is a lower-power tuned version of the engine—specifically, the 3.0TFSI engine. Its maximum power output is 213kW at 4850-6800rpm, and its maximum torque is 420Nm at 2500-4850rpm. Therefore, 45TFS is simply a numerical value representing the car's acceleration and not any other identifier. 3. Besides 45TFSI, there are also 50TFSI and 40TFSI, which follow the same principle and meaning. These values are also calculated using the same formula to represent the car's acceleration.
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VanHope
09/13/25 8:40am
I've recently studied Audi's rear badges, and the combination of numbers and letters like 45TFSI is quite interesting. The leading number 45 doesn't indicate engine displacement but rather Audi's current power level designation. Simply put, the higher the number, the more powerful the car—45 suggests the vehicle has around 265 horsepower (with slight variations depending on the model). TFSI stands for Audi's proprietary technology, which clearly means Turbo Fuel Stratified Injection engine. This technology allows the engine to consume fuel more precisely, making it both fuel-efficient and powerful. As for the S line often seen following it, that refers to the sport appearance package, with elements like bumpers and wheels being more stylish than the standard version. When you see the 45TFSI badge while car shopping, you'll know this car is more than capable for daily driving, with plenty of power for overtaking and climbing hills.
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