Our Honda Civic is 21 years old, well-maintained, has over 270,000 miles on it and is going strong. Some worn spots and stains inside, a couple of dings and chips outside, and we love it. It still gets better mileage than most new hybrids, and has never needed a major repair.
We've saved thousands of dollars a year over what we would have spent on newer cars by now. We hope to drive it for another 100,000 miles.
Upgrading cars is one of life's bigger expenses, especially if you buy one new. So determine your priorities: Safety? Reliability? Mileage? Size of car? Power, handling, speed? Style? Overall economy? If you work through a priority list that you and your husband can both agree on, it will make your decision to sell/keep/trade easier.
If you decide to keep your car, I can't stress good maintenance enough. Regular servicing, oil changes, checking tire pressure. Not only will it keep your car operating longer and more safely, but costs will stay lower if you fix things while problems are still small. You'll get optimal mileage.
Keeping and repairing an older car is one of the most economical choices in almost every case. We won't give up our car until it becomes unreliable or unsafe.