Are you unknowingly shortening your car’s life? In this video, we expose the 7 dumb mistakes that kill your engine before it even hits 100,000 miles. These silent engine killers are habits mechanics see every single day — and ignoring them can lead to catastrophic breakdowns and repair bills of $5,000 or more. From skipping oil changes to using the wrong fuel, neglecting warning lights, and driving habits that overheat your engine, we break down exactly what to avoid if you want your vehicle to last. You’ll also discover how to spot early engine trouble, maintenance hacks trusted by professional mechanics, and the truth about common myths that destroy cars. ✅ Save thousands in repairs ✅ Make your engine last twice as long ✅ Learn insider car maintenance secrets Watch until the end — mistake #3 alone can save your engine and your wallet!