What is the displacement of 45TFSI?
2 Answers
45TFSI represents a 3.0T displacement. The number 45 does not indicate the car's displacement but is a figure calculated based on the acceleration G-value. A larger number signifies a higher G-value during acceleration, indicating stronger power. The TFSI following 45 stands for Turbocharged Fuel Stratified Injection engine. TFSI refers to the engine's fuel stratified injection technology, essentially an FSI engine with turbocharging. The displacement designation is replaced by the G-value, such as 30TFSI, 35TFSI, 40TFSI, 45TFSI, 50TFSI, etc. A higher G-value number in the tail badge indicates faster overall acceleration for the vehicle. 45TFSI comes with two types of engines: one is a high-power version 2.0T engine, and the other is a 3.0T displacement engine. 40TFSI is a low-power version 2.0-liter turbocharged engine, while 45TFSI is a high-power version 2.0-liter turbocharged engine. Both engines are essentially 2.0-liter turbocharged engines, differing only in maximum power and torque.
When it comes to the 45 TFSI badge, most modern Audi models with this designation are equipped with a 2.0-liter engine. I often discuss cars with friends, and this number 45 is Audi's power level identifier, representing approximately 250 horsepower, while the actual displacement is a 2.0-liter four-cylinder turbocharged gasoline engine. This design is quite clever—small displacement but boosted to deliver strong power, making it suitable for city driving and highway cruising, with decent fuel efficiency. Popular models like the Audi A4 or Q5 commonly use this engine, making it quite widespread. In the past, Audi's naming was more straightforward, such as the A4 directly bearing a 2.0 badge, but now they've switched to this system, making it easier to gauge performance levels at a glance. Mechanics often say this engine has fewer issues and relatively simple maintenance, though slight variations may exist across different model years. Overall, as a daily driver, this car is hassle-free, quick to accelerate, and offers great value for money.
