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You've changed your own oil, swapped a starter, maybe even rebuilt a carburetor. But a full set of 30 car parts - from the obvious to the obscure - trips up even veteran wrenchers. Think you can beat the average? Take the quiz and find out.
Welcome back under the hood.
You've been around long enough to know the truth: nobody knows everything under the hood. Not the guy at the parts counter who has to look up a fuel filter for a 1978 Ford. Not your old shop teacher, even if he could diagnose a bad valve by ear. And certainly not the kid who just bought a $200 scan tool and suddenly calls himself a mechanic.
But you? You're different. You remember when you could actually see the engine without pulling off a giant plastic cover that says "no user serviceable parts inside." You've felt the satisfying snap of a stubborn bolt finally giving way after a good soak in penetrating oil. You've heard the sweet, lumpy rumble of an engine firing to life after a weekend of work - and you know there's no better sound on earth.
You know the difference between a camshaft and a crankshaft. You know why that difference matters when your timing chain starts rattling. And you've probably got a scar or two on your knuckles to prove it.
Thirty car parts. Some you've replaced yourself - maybe in a driveway, maybe in a friend's garage, maybe under a tree with a haynes manual and a lot of patience. Some you've only heard your mechanic mutter about while he wiped his hands on a red rag. And a couple - just a couple - that might make even a seasoned pro scratch his head and reach for the service manual.
We designed this quiz for people who actually care about what's under the hood. People who open the hood just to look, just to remember. People who can tell a 350 small‑block from a 302 at a glance. There are no trick questions here. No obscure parts from a 1972 diesel tractor that only three people on earth have ever seen. Just real components from real cars - the kind you've probably touched, or at least pointed at while saying, "That's the thingamajig."
Because you're tired of those fluffy quizzes that ask you what color a 1965 Mustang was. You want something with a little more meat on the bone.
Because you want to prove - to yourself, if no one else - that you still know your stuff. That all those hours under the car, those busted knuckles, those "I'll just replace one more part" Saturdays, they all added up to something real.
Because your son or grandson thinks cars are just "computers on wheels," and you want to show him there's still a place for real mechanical knowledge. For feel. For sound. For the satisfaction of solving a problem with your hands, not just your phone.
And let's be completely honest - because it's fun to be right. It's fun to see a question about an intake manifold or a CV axle and think, oh, I know this one. It's fun to click that answer and watch the score go up.
30 multiple‑choice questions - no timer, no pressure, no one watching over your shoulder. Just you and your memory of grease, grime, and glory.
Clear, plain‑English explanations after every answer - written for adults, not textbooks. If you miss one, you'll learn why. If you get it right, you'll feel smart.
A real mix - some parts you'll spot in two seconds (spark plugs, radiator, brake rotor). Others might take a minute (camshaft position sensor, intake manifold gasket, axle shafts). And a few that might just stump you.
No fake "gotcha" questions - if you've spent any real time under the hood, you have a fair shot. We're not trying to embarrass you. We're trying to remind you what you know.
Shareable results - because your car club buddies, your old racing friends, and your brother‑in‑law who thinks he knows everything need to see who's still got it.
Don't rush. There's no clock. Read each question twice. Sometimes the clue is in the wording - and we're not trying to be sneaky, just thorough.
Trust your gut. If it looks like a flywheel and acts like a flywheel and bolts to the back of the crankshaft like a flywheel... it's probably a flywheel.
If you miss a few? That's fine. Every miss comes with a short, painless lesson. You'll walk away knowing something you didn't know before. That's a win.
And if you get stuck on something from the fuel injection era? Don't feel bad. Some of us still miss carburetors.
So roll up your sleeves. Metaphorically, anyway. We won't make you get grease under your nails - not today.
Find a comfortable chair. Pour yourself a cup of coffee. Maybe put on some old blues or classic rock - something that reminds you of the garage. Then scroll down, click your answers, and see where you land.
At the end, we'll tell you how you stack up against the average weekend mechanic. Whether you're a master technician, a solid driveway mechanic, or someone who should probably watch a few more YouTube videos before grabbing a wrench.
"No cheating. No opening another tab to search for answers. You'll only be cheating yourself - and your garage reputation. Besides, the explanations will teach you anything you miss. So just take the quiz. Trust what's up there in your head. You might surprise yourself.
Good luck. You're going to need it.
(But you already knew that.)"
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