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To make a savings plan for a dream car, work out the full amount you need, meaning the price plus the first year of running costs and a buffer. Subtract what you have already saved, then divide the rest by the months until your target date. Check that monthly figure against your real budget, and adjust the car, the date or the amount until it fits.
Key takeaways
- Your target is the price plus a year of running costs plus a buffer, not just the advertised price.
- Monthly saving = (target − savings) ÷ months to your date.
- If the number is too high, change the date, the car or your income; do not just hope.
- Keep an emergency fund separate, and automate the monthly saving.
- Review the plan every month and recalculate when life changes.
This guide is education only, not financial advice. All figures are planning estimates. For advice on your own situation, speak to a regulated financial adviser.
Step 1: Work out the true target, not just the price
The price on the advert is only part of what you need. A realistic target includes:
- The car itself, including any dealer fees or delivery costs.
- Insurance for the first year. For powerful cars this can be large, and it depends heavily on your age, address and driving history, so get real quotes rather than guessing.
- Tax and registration where you live. In the UK, GOV.UK's vehicle tax rate tables show an extra annual charge for cars with a high list price, which applies for five years from the second time the vehicle is taxed. Check it for the exact car you want.
- Servicing, tyres and repairs. Performance cars often have higher servicing costs and more expensive tyres than everyday cars.
- A buffer for surprises. Adding around 10% to the total means one unexpected bill does not wreck the plan.
Add these up and you have a target that will not leave you owning a car you cannot afford to run.
Step 2: The basic formula
Once you know the target, the maths is simple:
Monthly saving = (Target − Money already saved) ÷ Months until your target date
Example: the target is £60,000, you have £12,000 saved, and you want the car in four years (48 months).
(£60,000 − £12,000) ÷ 48 = £1,000 a month
If £1,000 a month is not realistic, you have three levers:
| Lever | Example change | New monthly saving |
|---|---|---|
| Move the date | 6 years instead of 4 | (£60,000 − £12,000) ÷ 72 = about £667 |
| Lower the target | A £45,000 version instead | (£45,000 − £12,000) ÷ 48 = about £688 |
| Raise your income | A side project adding £300 a month | £1,000 needed, £700 from your salary budget |
Any interest your savings earn will bring the date forward a little. Keep the plan based on what you put in yourself, so it still works if interest rates fall.
MoneyHelper's guide to setting a savings goal makes the same point: naming the goal and a figure helps, and the plan is a balance between what you can afford and how long you want to save for.
Step 3: Check it against your real budget
A plan only works if it fits your life. Before you commit:
- Keep an emergency fund first. The government-backed MoneyHelper service suggests having three to six months' essential outgoings in an instant-access savings account. Keep that separate from the car fund.
- List your fixed costs and normal spending for a typical month.
- See what is genuinely left over. If the monthly saving is more than that, change a lever rather than hoping.
- Automate it. Set up a standing order on payday into a separate savings account, so the car fund grows before you have a chance to spend it.
Step 4: Track progress and adjust
Check the plan once a month. Write down how much you saved, the new total and how many months are left.
| Month | Saved this month | Running total | Months left | Monthly figure needed |
|---|---|---|---|---|
| Start | — | £12,000 | 48 | £1,000 |
| 1 | £1,000 | £13,000 | 47 | £1,000 |
| 2 | £600 (car repair) | £13,600 | 46 | About £1,009 |
| 3 | £1,100 | £14,700 | 45 | About £1,007 |
If you fall behind, recalculate the monthly figure with the new numbers instead of giving up. If you get ahead, you can bring the date forward.
Keep checking the car itself, too. Prices of used performance cars move over time, and the model you want in four years may cost more or less than it does today.
Worked example: Sam's plan from start to finish
Example: Sam wants a used sports car advertised at around £48,000. These figures are estimates for illustration only.
- Real insurance quotes, tax, a first-year service and new tyres add up to about £6,500.
- Car and running costs: £48,000 + £6,500 = £54,500.
- Plus a 10% buffer: about £60,000 target.
- Already saved: £12,000, on top of a separate emergency fund of four months' essentials.
- Target date: 4 years (48 months).
- Monthly saving: (£60,000 − £12,000) ÷ 48 = £1,000.
Sam's budget shows about £750 a month spare. Rather than give up, Sam moves the date to five years: £48,000 ÷ 60 months = £800 a month. A small side project covers the remaining £50. Sam sets a standing order for £750 on payday and reviews the numbers on the first Sunday of each month. That is a plan Sam can keep.
Common mistakes to avoid
- Saving for the price only. Insurance, tax, servicing and tyres can add thousands in the first year. Put them in the target from the start.
- Using the emergency fund as the car fund. If one surprise bill wipes out your car savings, the plan collapses. Keep the two pots apart.
- Counting on interest or investment returns. Rates change. Base the plan on what you put in yourself, and treat any interest as a bonus.
- Setting a monthly figure you cannot keep. A smaller amount you save every month beats a bigger one you abandon after three months.
- Never revisiting the car. Your income, the car's price and your priorities can all change. Review the target at least once a year.
- Forgetting the running costs after year one. Before buying, check that the monthly cost of owning the car fits your budget without the savings you have just spent.
Doing the maths faster
You can do every step above with a pen and a calculator. If you would rather have a planner do the sums and turn them into dates and monthly targets, the Supercar Planner is our own web app built for this. Its figures are planning estimates, not financial advice.
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FAQ
How much should I save each month for a car?
Divide what you still need (target minus savings) by the months until your target date. The right figure is one that fits your real monthly budget after essentials and emergency savings.
Should I include insurance in my car savings goal?
Yes. Insurance on powerful cars can be expensive, especially for younger drivers, so include at least the first year's cost, based on real quotes.
How long does it take to save for a dream car?
It depends on the target and how much you can save each month. Divide the amount still needed by your realistic monthly saving to get the number of months.
Should I build an emergency fund first?
Yes. MoneyHelper suggests three to six months' essential outgoings in instant-access savings. Keep it separate so a surprise bill does not raid the car fund.
What if I can't afford the monthly amount?
Change one lever: a later date, a cheaper version of the car, or extra income. Recalculate until the plan fits your budget.