We’re all human, and we all make mistakes. It’s what we tell ourselves when things go wrong, and for the most part, it’s true. But here’s the thing: not every slip-up is created equal. Breaking a plate during dinner is unfortunate. Backing your car through the garage door? That’s going to sting a lot more. Both are accidents, sure, but the consequences couldn’t be more different.
Below, we’ve gathered a collection of painfully expensive mistakes people have shared online, the kind that make you wince and instinctively check your bank account just looking at them. Scroll down to see the photos, and maybe send some sympathy to the folks behind them. They could definitely use some.
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Wife Left The Door Open To The Pool Area. Expensive Robot Vacuum (Bottom And Upside Down) Decides It Wants To Meet The Pool Vacuum
Meet Bonnie, Our 3-Month-Old Collie. During The Night She Discovered A Can Of Blue Paint With A Loose Lid
We call this her 'blue period' since she is obviously going through some artistic phase. The Chinese rug cost nearly $6,000.
Meanwhile At The Mercedes Dealership... And A Brand New G Wagon
Sometimes the simplest errors turn into the most expensive lessons. When it comes to famous blunders, few can match the scale of what happened to France’s national railway company in 2014. SNCF ordered 2,000 new trains worth billions, only to discover they were too wide for over 1,000 of the country’s train platforms.
The company had measured newer stations but neglected platforms built more than 50 years ago. The error forced them to spend an additional 50 million euros widening 1,300 platforms over two years, turning what should have been a triumph of modernization into an expensive reminder to double-check your measurements.
Scored $320 Of Lumber For $90. Now I Get To Pay $500 For A New Windshield
Follow me for more money saving tips.
I honestly thought that everyone else that this happened to just wasn’t being careful enough. Send the judgement. I deserve it.
I've done it, except it was the windshield that popped. I'd been using an 8' length of ABS pipe to bring bundles of rebar home and the bare pipe fit in the car for the drive into town. Then one day I had to bright idea of adding an ABS collar to each end to make them stronger, which used up 1/2" of the 1/4" safety margin I'd been working with. "SLAM-CRACK-'CK-ME!"
Cement Truck Mishap
What Could Go Wrong If I Drive My Expensive GMC Pickup And Trailer Across Ice That Is Too Thin To Support The Weight. Little Bay De Noc, MI
In London, a skyscraper became famous for melting cars. The building at 20 Fenchurch Street, nicknamed the Walkie Talkie, created an unexpected problem during its construction in 2013.
Its concave glass facade acted like a giant magnifying glass, focusing sunlight onto the street below with such intensity that it warped car panels and melted plastic parts. One Jaguar owner found his side mirror and bodywork damaged after parking nearby for just an hour.
The phenomenon earned the building a new nickname: the Walkie Scorchie. Developers eventually installed a permanent sunshade at a cost of around £10 million to fix the problem.
$5000 Canadian After Someone Using The Microwave To Disinfect It
When The Fire Suppression Foam Is Accidentally Released
Someone At Porsche Is Getting Fired Today
NASA experienced one of the most frustrating mistakes in space exploration history in 1999. The Mars Climate Orbiter, which cost $125 million to build, was lost because of a simple measurement mix-up.
Engineers at Lockheed Martin used imperial units while NASA’s team used metric units. Nobody caught the discrepancy until it was too late. The spacecraft missed its intended orbit and burned up in the Martian atmosphere. The entire mission vanished because it got lost in translation of mathematical language.
My Neighbor Parks This Expensive Car On The Street
Delicate Evening Operation On The A4 Highway At The Valmy Rest Area. A Heavy Truck Transporting Utility Vehicles Crashes Under The Canopy Of A Gas Station
Honestly that's kind of impressive! How do you even make that happen??
A Train Car In Minnesota Carrying Corn Had A Leak
The business world has seen its share of spectacular misjudgments. In the early 1990s, Quaker Oats bought Snapple for $1.7 billion, convinced it would dominate the beverage market. The acquisition turned into a disaster, and just three years later, Quaker Oats sold Snapple for only $300 million.
The loss was staggering, made even more painful by the fact that Snapple continued to thrive as an independent brand after the sale. Sometimes the best business decision is recognizing when a partnership simply isn’t working.
Do Not Park On The Beach
Well
Got Gucci Sunglasses For My Wife. Dog Ate Them Before She Had A Chance To Wear Them
Ordered for Valentine’s Day. Shipping was delayed. Got them yesterday. Had them for 2 hours before finding them like this in the dog’s bed. My fault, though. I set them on the floor at the top of the stairs so wife wouldn’t forget them when she went out.
Spain faced an engineering nightmare that sounds almost impossible to believe. Designers working on the Isaac Peral class submarine made a decimal point error in their calculations, making the vessel 100 tons heavier than planned.
The mistake meant the submarine would sink to the ocean floor and never resurface. Engineers caught the error before construction began and redesigned the submarine to be longer, but then discovered it was too large to fit into the port where it was being built. The cascading errors turned what should have been a routine military project into a costly lesson in precision.
Car At The Bottom Is Flooded. Car At The Top Has Been Totalled
Due to the flooding, water got into the mechanism and short-circuited it. It raised the platform, and this was the result.
These never seemed like a good idea in the first place. Too easy for something to go wrong.
Residential Homes Built In South Dakota Over Undisclosed Abandoned Gypsum Mine... Sinkhole Renders Entire Neighborhood’s Property Values Now Worthless
Broke My Leg By Standing Too Fast And Falling Onto Myself
Cultural attachment can be stronger than taste test data, as Coca-Cola learned in 1985. After conducting nearly 200,000 blind taste tests showing consumers preferred a sweeter formula, the company replaced its 99-year-old recipe with New Coke.
The backlash was immediate and intense. Protest groups formed across America, consumers stockpiled the original formula, and the company received up to 8,000 complaint calls per day. One person even wrote to the CEO addressing him as “Chief Dodo.”
Just 79 days later, Coca-Cola brought back the original formula as Coca-Cola Classic, having discovered that some things matter more to people than taste.
That Can’t Be Cheap
Who Needs Outriggers?
NOAA-N' Accident
Designated NOAA-N' (NOAA-N Prime) prior to launch, is the last of the United States National Oceanic and Atmospheric Administration's POES series of weather satellites. The satellite suffered an accident prior to launch, which resulted in it falling off its clean room mounting, resulting in significant damage.
Trading errors can happen in the blink of an eye with devastating results. In 2005, a stockbroker at Mizuho Securities in Japan made a typing mistake that cost the company around $225 million. Instead of selling one share at 610,000 yen, he accidentally offered 610,000 shares at 1 yen each.
Investors immediately jumped on the incredible deal, buying up the drastically underpriced stock before anyone could stop the trade. Even with stock exchange rules limiting some of the damage, the typo became one of the most expensive keystrokes in financial history.
Big Oof
From One Of Our Customers In Cedar Lake, Indiana. Someone Sunk Their $300k+ Pavati Wake Boat, Then Swamped His Jeep And Raptor While Trying To Drag It Out
$300k Video Wall Came Down Today In Vegas
The entertainment industry isn’t immune to costly mistakes either. When reshoots were needed for the 2017 film Justice League, Warner Bros faced an unusual problem. Actor Henry Cavill had grown a mustache for another role and couldn’t shave it off.
The studio ended up spending around $25 million to digitally remove the mustache from every scene featuring Superman. The extensive visual effects work became a notorious example of how small scheduling conflicts can balloon into massive budget overruns when production timelines collide.
I Installed My Own Microwave Today And Saved $150 In Installation Fees
Merry Christmas! I Got An Extremely Expensive Drone And My Sister's Dog Broke It When Nobody Was Watching
Something Scared My Wife And I At 2 AM
This mirror was like 10 ft and came with the house when we bought it. I thought someone shattered our window in the bathroom and was breaking in, or the shower glass shattered. 2 hours later, I’m still cleaning glass off the floor.
These stories remind us that mistakes happen at every level, from individual people to massive corporations. The scale might be different from dropping your phone or denting your bumper, but the fundamental lesson stays the same. We’re all capable of errors, and sometimes the most expensive ones come from the simplest oversights.
The best we can do is learn from these cautionary tales, double-check our work, and hope that when we inevitably mess up, the consequences are a bit more forgiving.
We Always Knew It Would End Like This Some Day
My wife and daughter have been telling me for years that the tempered glass floor protector in my office was a ticking time explosive. Today, when I accidentally knocked my favorite hand-etched glass tumbler off the desk, the floor protector saved it by shattering first into thousands of tiny shards. Well done by the floor protector.
I've never understood putting glass under a chair that rolls around while someone sits in it. 🤷♀️
Took This On My Way To Work, Guy Forgot To Secure His Boat To His Trailer And Stomped On The Breaks To Stop
Paint Store Guy Didn't Close The Can Properly
Bought a car one week ago, more expensive than I could really afford but so beautiful. Picked up paint while on vacation to paint my mom's house. Teenager working at paint store apparently didn't close the can properly. That's 1 gallon of slightly greenish gray wall paint on the floor of my new car. Paint store guy's response was to apologize profusely, give me another gallon of paint, and throw in a free tub of miracle wipes. Lovely.
I love how it's the paint guy's fault. It's your car, your paint, and your responsibility to ensure everything is secured for transit.
Apparently D And R Look The Same When You're Tired
My poor brother did this the day he got his driver's permit, with Mom in the car.
Neighbors Removed Their Retaining Wall Without Realizing It Was Providing Support For This Other Wall, Ultimately Leading To Its Failure
Son Decided To Swallow A Nickel And Turn $.05 Into $4400.00
Saw This House-On-Stilts Fail On My Morning Run Today
I Didn't Know This Was Possible
I Baked My AirPods Along With My Choc Chip Cookies
I turned the oven on to preheat it. 3 min later I removed the oven tray to put it into the kitchen island so I could line it with cookie dough. It didn’t feel very hot, yet the AirPods that were on the kitchen island were presumably attached to it. When I opened the oven after baking for 10 min, there was an abnormal cookie.
I Accidentally Burned Down My Parent's Outdoor Kitchen By Placing A Still Burning Fire Log On Top Of The Rest Of The Firewood
If You’re Having A Bad Day, Just Know That At Least You Didn’t Shatter A 16,000$ Bottle Of Victory In Europe, 1945 Château Mouton Rothschild
In all seriousness it was maybe the most beautiful thing I have ever smelled in my entire life. I only have a level 2 cert so I’m not super qualified to speak on the smelling notes BUT it smelled like walking through a Plum orchard after it rains in the midst of Autumn.
Rag Left In Engine After Repairs Turned To Shreds
Boss Isn’t Gonna Be Happy With That One
My Car Exploded On My Way To Work
I texted my coworker, he's the only coworker's number I have and called him asked if he was at the restaurant and explained what happened. I told him I'll send a couple pics and then he replied they want a selfie with the car "to make sure".
$65,000 Medication... Most Expensive Thing I Have Ever Had To Throw Away
The patient didn’t show up for their appointment. Once mixed, it expires in less than 24 hours. No one else was scheduled for it, unfortunately.
We currently don’t have mixing capability at our location. We have to mix it at a different location and have it delivered on the day of the appointment. 1st time this had happened with such an expensive medication.
This Is What An Expensive Mistake Looks Like. Quarter Inch Hole In Inaccessible 20 Conductor Cable
More info from OP (dots exchanged to not get hidden) "Yeah that’s about it_ I was drilling through a floor down through the ceiling of the room below it_ I was pretty sure it was just 13 inches of empty space but turns out it was really not_ This cable contained 20 smaller wires_"
Mistakes Were Made
Started The Weekend By Popping Off My Crown While Flossing
An Expensive Mistake... Scout 380 LXF... I Assume Pushing Seven Figures. Maybe Over
Shower Door Spontaneously Shattered Behind Me
That happened to the rear window of my car once. I slammed the door and a million little pieces of glass fell inside the back seat. It sounded like ice shattering.
I Work In Pharmaceuticals, This Was A Very Expensive Mistake
I should clarify, this is for iron deficiency, if I’m not mistaken it’s called Sytron! Not blood, that would have been much worse!
Absolutely Shattered
My Shower Was Leaking So I Tried To See If I Could Fix It. I Broke It Instead
That's An Expensive Way To Start A Vacation In The Vacationland State
You Can't Park There Sir
It looks like the bottom of the tree rotted out causing it to fall over, it didn't even rip the roots out of the ground. I think the cuts are from the fire department/public works cutting it to clear the roadway. There was a pile of cut pieces out of view of the picture.
"Act of God", at least as far as US insurance companies are concerned. You won't get a penny from them. (I suppose you can always go to a church and ask the Pastor why God hated your car.)
Second Time My Girlfriends Mom Backed Into My Car Today
First pic is of my old car, which gfs mom backed into of October 2024. Today August 2025, she did it again to my new car. Girlfriends mom takes no responsibility both times saying it was my fault because both times it happened I was working a different shift at work, and that I should have stuck to my normal shift. Me and girly's relationship is at an all time strain level.
This is her subtle way of saying she does not see you as son-in-law material.
Dump Truck Thinks Its Kool-Aid Man And Damages River Spirit Expo Center At Tulsa Fairgrounds
Today At Work, A Coworker Crashed A Trolley Full Of Plates Needed For A Function
Phone Purchased At 10:20 AM, Black Ice Got Me At 1:30 PM
I purchased it same day, currently out at school and there’s isn’t a repair place around here so I’m waiting until I go home in a couple weeks to fix it up.
Let's put a glass back on these ridiculously expensive devices people carry around all day! What could possibly go wrong?
Moved Into The New House And Found Out Our Toddler Broke Our 65” TV
Jet Airways Bus Accidently Hit The Belly Of Air India Flight After The Driver Reportedly Lost Control At The Wheels
Was the prop spinning? Because you'd have two very different faces being made by the driver.
Took My Expensive Knife To A Local Sharpener. This Is How It Came Back
Mac Mighty Slicer. The first photo is how it is supposed to be. Last photos are what it looks like now…
Guy Who Mows My Lawn Somehow Did This While Mowing
That happened to us too once. The lawn service accidentally ran over a rock and it got catapulted right through the dining room window. They paid to get it replaced.
Cat Jumped Off The Samsung Serif TV And It Fell. Replacing The Frame Costs $1500
I’ve got one of these! It comes with legs, which is the only reason I bought it.
I Dropped My AirPods
Mistakes Were Made. So Yeah. Apparently You Shouldn't Put Vanish On All The Stains
I Was About To Go To Bed
op "I used my dust pan to squeegee(?) it into a bunch of paper towels and tossed them in a trash bag, with my child's help_ The majority of it is cleaned, but I have a lot of details I have to deal with tomorrow_" (_ replaced to not get hidden)
My Friend Went To The Apple Store Today Because He Broke Both The Front And Back Of His iPhone XS
They told him that because of Corona, the repair service was temporarily closed. He then chose to buy the 11 Pro, which he then dropped when opening the box.
Sold My iPad In Public Space At Night In Minnesotan -10 F Temperature, Turned Out It's Fake
I think the word replica on the top left should have been a hint there would be a problem
Smashed A Panel Of Pre-War Glass In A Grade 2 Listed Building. I’m Doing A Job Tidying Up These Very, Very Old Sash Windows. Managed To Smash A Panel. Costly Mistake
Even if it's Grade 2 listed, you can still replace the glass. Its not difficult.
I Just Broke A $5,000.00 Bottle Of Remy Martin Louis XIII Cognac At Work
Chinese Mining Farm - Flood Damage
My Wife Bought Me A Ceramic Oura Ring For Christmas. It Slipped Off Of My Finger In The Shower And A Huge Chunk Chipped Off On Day 1
sort of reminds me of the collars in Battle Royale (2000), these are packed with lithium instead of explosions though
$8k Mistake. Let’s Hope I’m Not Fired
Cutting Board Exploded
Turned around after washing my hands and heard a huge crashing noise. It was my cutting board obliterating itself. I assume I cut the food too close to the burner and it got hot, then when I washed my hands with cold water it cooled down too fast. Either that or there’s a ghost that hates cutting boards.
A glass cutting board is the fastest way to dull knives. I wonder why they even exist.
Made The Mistake Of Not Asking Market Price… $53 Per Shrimp
Mistakes Were Made
My Tesla's Horn Went Off At 4 Am For Over 20 Minutes Uncontrollably, $2000 Fix From Tesla
Which of these is the most expensive? The dropped satellite, the flooded fighter aircraft, the medical bill?
Which of these is the most expensive? The dropped satellite, the flooded fighter aircraft, the medical bill?
