Well, with any mass produced object, there can be problems...witness GM's attempt to deflect blame for actual deaths due to their ignition switch issues over the last couple years. This is especially true of new cars and why I won't buy an introductory year. Even Ferrari encounters problems.
No one has been killed by burning Ecoboosts, I don't think. Manufacturers need to stay ahead of potential problems and the experience of big-scope recalls these days (which would have been ignored by manufacturers in the past, until death) show manufacturers that it's cheaper to deal with the issue than lose market share. Plastic tanks are not universal in automotive and motorcycle use but they are common. Stronger penetration resistance, lighter, rust free for life.
The biggest issue with the 11-14 has been that it is caught up in the Takata airbag recall and supply of the replacement bags is delayed.
The S197 passes all crash tests with flying colours. The new S550 is even better.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85
2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP