No you do not need to replace the flywheel if the flywheel is not damaged. If the flywheel is damaged you should replace it.
This car is equipped with a dual mass flywheel with shipping it is about $400. Even if you wanted to buy one they are currently out of stock when will they be available I do not know. Someone actually recently posted he was having work done at a dealership and they can't even get a OEM flywheel.
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