The 340/440 and the S4/S5 are direct competitors so the S cars have to be taken into consideration. If the Stinger competes with the 340i then it competes with the S4 as well. As it does with the Merc C43 (its is not a full AMG car, more like an Audi S car). The Stinger GT
3.3T is not competing against the C300, 330i, etc. That is what the base 2.0T Stinger is for.
The BMW 340i is making 320 hp...............at the wheels.
The Audi S3 is a 0-60: 4.6 sec / 1/4 Mile: 13.3 @ 104 car. Stock for Stock, it will be really,really close. The Stinger should trap higher with more hp, so maybe a race to 140+ mph the Stinger wins.
Nope, not great drivers on a good track or anything of the like. That 4.8 sec time is from a RWD manual 340i. The 8-speed auto xDrive version is MUCH faster and I hate to say this, but it will likely smoke the Stinger GT.
Try 0-60: 4.1 sec.*
1/4 Mile: 12.7 @ 108.3 MPH
reference: https://www.edmunds.com/bmw/3-series/2016/long-term-road-test/2016-bmw-340i-performance-tested.html
The Stinger GT is going to be "almost" as fast as the Germans for way less money.
*I used the 1-ft of roll out time as that is how every magazine tests.