Financing a used car is now the most common way to buy a vehicle without draining your savings. Set up properly, financing lets you reach a better car and spread the payment across comfortable monthly instalments. In this guide we explain, in plain language, how used-car financing works in 2026 and how to secure the best terms.
How financing a used car works
The idea is simple: a lender advances the amount for the car, and you pay it back in monthly instalments over an agreed term, plus interest. You can finance the full value of the vehicle or only part of it, putting down a deposit at the start. The larger the deposit, the smaller the amount financed and, therefore, the lower your monthly payments.
At a dealer like General Car's you can arrange the financing at the moment of purchase, with all the paperwork handled in one place. Financing is provided through partner banks, with terms of up to 96 months and subject to the bank's approval. Keep in mind that only newer cars (roughly up to 11 to 12 years old) can be financed; older vehicles are sold for cash or by bank transfer only. And if you buy your car with a warranty, the whole transaction stays fully documented. You can review your rights in our guide on how to buy a used car with a warranty.
TIN and APR (TAE): the difference you need to understand
When you compare financing offers, you'll see two percentages that are often mixed up:
- TIN (nominal interest rate): this is the pure interest applied to the money borrowed. It's useful, but it doesn't reflect the total cost.
- APR (TAE, annual equivalent rate): this includes the TIN plus fees and other associated charges. It's the figure that really tells you how much the financing costs you per year.
The golden rule: always compare by APR (TAE), not by TIN. Two offers with the same TIN can have a very different APR if one carries hidden fees or tied insurance. Always ask for the full amortisation schedule so you can see how much you'll pay in total.
Deposit, term and monthly payment
These three factors are linked and shape what your financing will look like:
- Deposit: it isn't always required, but putting something down (for example, between 10% and 20% of the price) reduces the amount financed and improves your terms.
- Term: today it's possible to finance for up to 96 months (8 years), subject to approval by the partner bank. A long term lowers the monthly payment, but it increases the total interest you pay.
- Monthly payment: it should fit comfortably within your budget. A good benchmark is that the payment shouldn't exceed what you can manage each month without strain.
The ideal balance depends on each person. If you'd rather pay less interest overall, choose the shortest term you can afford. If you need a low monthly payment, extend the term, but be aware of the cost. You can see the specific terms for each car in our financing section.
Part-exchanging your current car
A very practical way to reduce the amount you finance is to part-exchange your current car. The dealer values your vehicle and deducts that amount from the price of the new car. The advantages:
- You reduce the amount to finance and, therefore, your monthly payments.
- You save yourself the effort of selling your car on your own.
- Everything is handled in a single transaction.
If you'd like a rough valuation of your current car, you can ask Carmen, our virtual assistant available 24 hours a day, and she'll help you take the first steps at any hour.
Tips to get your financing approved
The lender assesses your ability to repay. To improve your chances of approval:
- Have your recent payslips or proof of income to hand.
- Check that you don't appear on any defaulters' register; if there's an error, correct it beforehand.
- Keep a reasonable debt-to-income ratio: the total of your monthly repayments shouldn't eat up an excessive share of your income.
- Put down a deposit if you can: it signals solvency and reduces the risk for the lender.
- Avoid applying for several loans at once within a short period.
If you're self-employed (autónomo) or have variable income, prepare your tax documents from the last financial year. The more clarity you offer, the easier approval will be.
Before you sign, check the car carefully
Financing is only one part of the purchase. Just as important is making sure the car is in good condition and free of outstanding charges. Before you commit, run through our checklist of what to check before buying a used car, especially the DGT report, so you don't finance a vehicle with surprises.
Take the next step with General Car's
At General Car's we help you find the right car and the financing that fits your budget. You can browse our catalogue, weigh up your options in the financing section, or ask Carmen any question about payments and terms at any hour. If you prefer, drop by our showroom at Calle Italia 198, Castelló de la Plana, or message us on WhatsApp from the contact page to book your visit and try the car in person.