Multiple Catalytic Converters failed in my Dodge Viper with only 13'000 miles on it. Ya, I wasn't very happy about this, my car was in the shop at Nyle Maxwell Dodge Dealership here in Austin for about 4 months to fix it. All the maintenance has been kept up impeccably, garaged, premium gas and mobil 1 oil always of course and this vehicle has has multiple problem, probably totaling over $20'000 in repairs at the dealership, including a new clutch, a air bag light multiple new batteries on an on. I would not recommend buying a Viper to anyone they are way more problems than they are worth.