The monthly subscription fee for Sirius has been $12.95 for years. Now that Sirius has us all addicted to commercial free music and all of the other entertainment channels, they need to raise the prices $2 per month to start turning a profit! It makes sense to me. To avoid those increased charges you can call Sirius at 1-888-539-7474 before March 11th and pre-pay for a length of time at the current rates.
If you have a lease, pre-pay though the end of the lease. They have lots of packages available. In general, the longer term you sign up for, the cheaper it gets per month. And, if you cancel the subscription early Sirius will apply the unused portion to your next subscription. When you purchase a new Mercedes it’s also a good plan to purchase and extended pre-paid plan at the time you take delivery so that they can apply your 6 months base service as a credit toward you pre-paid plan. If you plan to keep the car for many years the best value may be the Lifetime Subscription. It’s $399 and will stay with the vehicle forever!
Referenced from SiriusBuzz.com