UK Tesla calculator
Compare Tesla Models (UK 2026)
Put two current UK Tesla variants side by side — price, range, real-world efficiency, annual charging and company-car BiK tax — on a like-for-like 8,000-mile basis. Model S and Model X were removed from the UK line-up in March 2026, so they're not listed.
Your figures
All figures are editable estimates, checked 2026-07-13. We never present a rate as fixed fact — see our sources.
Result
| Spec | Model 3 (RWD) | Model Y (RWD) |
|---|---|---|
| List price (P11D) | £39,990 | £44,990 |
| WLTP range | 318 mi (WLTP) | 311 mi (WLTP) |
| Real-world efficiency | 4.1 mi/kWh | 3.7 mi/kWh |
| Charging (8k mi, home) | £478 / yr | £530 / yr |
| BiK tax (40% payer) | £53 / mo | £60 / mo |
Estimate only — confirm live figures with Tesla and your suppliers.
How this is worked out
Charging cost uses a fixed 8,000-mile reference at the home rate (24.5p/kWh) so the two cars are compared fairly. BiK uses the 2026/27 rate (4%) for a 40% taxpayer. Prices, ranges and efficiencies are checked 2026-07-13; confirm live prices at tesla.com/en_gb.
How the Model 3 (RWD) vs Model Y (RWD) figures above are calculated
Both cars are put on the same footing so the comparison is fair — here is exactly how each column in the table is built.
- Fix a common mileage. Every comparison uses a fixed
8,000 miles/yearreference, regardless of which two models you pick, so neither car is favoured by a different mileage assumption. - Convert to energy per model.
kWh = 8,000 ÷ mi/kWh— Model 3 (RWD): 8,000 ÷ 4.1 = 1951 kWh; Model Y (RWD): 8,000 ÷ 3.7 = 2162 kWh. - Price both at the home rate.
£ = kWh × 24.5p ÷ 100— Model 3 (RWD): £478 / yr; Model Y (RWD): £530 / yr. - Work out BiK for both, at the same tax rate.
BiK/mo = (list price × 4% × 40%) ÷ 12— Model 3 (RWD): (£39,990 × 4% × 40%) ÷ 12 = £53 / mo; Model Y (RWD): (£44,990 × 4% × 40%) ÷ 12 = £60 / mo.
Pick any two models above and the same four steps recompute for that pair. Prices, ranges and efficiencies checked 2026-07-13; confirm live prices at tesla.com/en_gb. Full list: Methodology & sources.
What the comparison deliberately holds constant
To compare two cars fairly the calculator fixes several inputs — the same reference mileage, the same home rate, the same taxpayer band. That's the right choice for an apples-to-apples number, and it means the output answers a narrower question than it might appear to: which car costs less, all else equal. All else is rarely equal, so three things are worth adding by hand.
- Your real mileage, not the reference figure. The efficiency gap between these cars only matters in proportion to how far you drive. At low mileage it's noise; at high mileage it compounds every year.
- Your actual home/public split. A comparison at the home rate flatters both cars equally, but if much of your charging is public the running-cost gap widens in favour of the more efficient one.
- The £50,000 VED line. This is the one that can dwarf everything else on this page. Since 1 April 2026 the Expensive Car Supplement threshold for zero-emission cars is £50,000 on list price, and crossing it costs the supplement for five years. If one configuration sits below and another above, that single fact can outweigh every running-cost difference in the table.
Where the two cars are genuinely identical
Worth stating plainly on a site that hands out referral codes: the referral benefit is the same on both. Around 650 free Supercharging miles on a new Model 3 or Model Y, with no model-specific bonus and no version of the code that favours one. So the referral belongs nowhere in this comparison — take it either way, and let the decision turn on the rows that actually differ.
The same goes for the ordering mechanics: open the link before configuring, check the referral line in the order summary before paying. Identical for both, and unaffected by which you pick.
The thing a cost comparison structurally can't settle
Most people choosing between these two are not really choosing on cost, and it's worth saying so on a page built to compare costs. One is a saloon and one is a taller crossover with a bigger boot and a higher driving position. If you need the space or the access, no running-cost figure should talk you out of it; if you don't, the more efficient car will keep being the cheaper one for as long as you own it.
Use the numbers above to size the penalty for choosing the car you actually want — that's a question they answer well. Don't use them to pick the car.
Questions
Should I buy a Tesla Model 3 or Model Y in the UK?
The Model 3 is cheaper, more efficient and has slightly more range per variant; the Model Y is roomier with a hatchback boot and higher driving position. Company-car drivers often pick on BiK cost and boot space — compare both above for your usage.
Can I still buy a Tesla Model S or Model X in the UK?
Model S and Model X were withdrawn from the UK referral programme and line-up in March 2026, so this tool focuses on the Model 3 and Model Y that UK buyers can actually configure today.