When I was in my 20s, swapping cars every couple of years was a thrill. I loved negotiating and getting the best deal out there. But as time went on and my bank account grew, my enthusiasm for cars faded. Now, I believe that the sweet spot for keeping a car is about ten years. This timeframe lets you get the most out of your investment while avoiding the uptick in safety risks that older cars face, assuming you drive around 12,000 miles annually. If you’re not hitting those miles, you could stretch it further.

Buying a three to five-year-old used car and driving it for another five to seven years strikes a nice balance. It allows you to bypass the biggest depreciation hit and still sell it for a decent price later on.

On the flip side, luxury cars costing over $100,000 aren’t worth the expense. You’re better off investing that money in stocks or real estate instead of sinking it into a depreciating asset.

In the realm of personal finance, there’s a big focus on using things as long as possible to maximize value. That’s why I still wear my old, worn-out shirts. Even if they’re falling apart, there’s no immediate danger—unlike with cars. Driving a car past the ten-year mark isn’t advisable, especially if you have the means to replace it. The risks just aren’t worth it, as safety should come first. Plus, the consequences of a car failure can be dire, considering the number of fatalities from car accidents each year.

When I was a student, I owned an old Toyota Corolla that was constantly on the brink of major repairs. Later, a classic BMW I purchased in my late 20s had multiple breakdowns at the worst times, like when my brakes failed on the way to a store. Despite its beauty, it was a magnet for problems.

Having driven a Land Rover Discovery for over a decade, which lasted 14 years, I faced similar issues. Although it never endangered me, it was no longer viable for passing emissions tests without costly repairs.

Becoming a parent has shifted my perspective on car safety dramatically. Growing up with financial constraints meant the only car we could afford was a cheap beater. Today, I wouldn’t dream of letting my kids drive a car that wasn’t reliable for a long commute.

The recent tragedy involving Michael Lewis’s daughter has only deepened my conviction that investing in a safer, newer vehicle is worth every penny if it means protecting your family.

In terms of car maintenance, the goal is to keep up without spending a fortune. As cars age, they require more costly repairs, and it’s crucial to recognize when maintaining an older car is no longer economical compared to buying a new one.

And finally, as cars evolve, so do their safety features. From automatic emergency braking to adaptive headlights and lane-keeping assist, these advancements are making cars safer. That’s why replacing your car every eight to ten years makes sense—not just for safety but to enjoy the improvements in technology and design that enhance the driving experience.