BYD Sealion 8 vs Tesla Model Y

Read the basis, not just the number

These two prices are not the same kind of price and comparing them straight is how people get caught. BYD publishes the Sealion 8 Dynamic FWD at $56,990 drive-away, with free on-road costs, under a campaign covering orders placed between 1 August and 30 September 2026 for delivery by 31 October 2026. Tesla publishes the Model Y RWD at $58,900 before on-road costs. Registration, stamp duty and CTP all still have to go on top of the Tesla, and they vary by state.

So the gap is not $1,910. It is $1,910 plus whatever your state charges to put a $58,900 car on the road, which in most of the country is several thousand dollars. Tesla's own novated lease footnote gives a useful sense of scale: it quotes an estimated drive-away of $96,204 for a Model Y Performance listed at $89,400, a difference of $6,804. Apply something in that neighbourhood and the BYD's real advantage on the road is meaningful rather than marginal.

One more thing that changes the maths for a lot of buyers, current as at September 2026. The Model Y is a battery electric vehicle priced well under the luxury car tax threshold for fuel-efficient vehicles, so it qualifies for the FBT exemption on a novated lease. Plug-in hybrids lost that exemption for new leases on 1 April 2025, so the Sealion 8 does not. For a salary-packaged buyer that single difference can be worth more per year than the entire price gap above. Run both through our lease calculator before you decide either is the cheaper car.

This is the clearest gap on the page, and it is not about how the cars perform. It is about what has been tested.

The Tesla Model Y holds a five-star ANCAP rating with a 2025 datestamp, scoring 91% adult occupant protection, 95% child occupant protection, 86% vulnerable road user protection and 92% safety assist. That rating applies to all variants except the Model Y L and runs to December 2031. The 95% child score and the 92% assist score are both near the top of what any SUV has managed under the 2023-2025 criteria.

The BYD Sealion 8 has no ANCAP rating published. Not a low one, not a provisional one: none. ANCAP has rated the Sealion 6 and the Sealion 7, both at five stars, but there is no rating page for the Sealion 8 and BYD makes no ANCAP claim on its own Australian model page or in its MY26 spec sheet. We will not infer a star rating from a sibling model, because ANCAP ratings are never inherited between models.

What we can say is what is fitted. The Sealion 8 has front, front side, far-side, second-row side and full-length curtain airbags, autonomous emergency braking, emergency lane keeping, blind spot detection, front and rear cross-traffic braking, a 360-degree camera and third-row emergency locking seatbelts. E-call is listed as arriving in Q2 2026 by over-the-air update rather than being fitted at launch. That is a well-equipped car by any reading, but equipment lists are not a crash test result.

If a published rating is a hard requirement for your family, this decision is already made. If you are comfortable waiting, keep an eye on ancap.com.au, because a car selling in these numbers usually gets tested sooner or later.

Both cars are well equipped and the equipment lists are not really the argument. The Sealion 8 comes with adaptive cruise, intelligent cruise control, traffic sign recognition, adaptive headlamps, a 360-degree camera, front and rear parking sensors across four zones, front and rear cross-traffic alert and braking, blind spot detection, driver fatigue and distraction monitoring, and a cabin monitoring system with child detection on all seats. Suspension is double-wishbone front and multi-link rear, with intelligent damping on the AWD grades.

It also has vehicle-to-load on every grade, with a discharge adapter supplied. That is genuinely useful if you camp, run tools, or want a backup during an outage. Tesla does not list vehicle-to-load for the Model Y.

The Tesla counters with the things Tesla is good at: over-the-air updates that meaningfully change the car, the Supercharger network, a mature app, and a driver assistance stack that ANCAP scored at 92% for safety assist. It also has 19-inch or 20-inch wheel options on the RWD and a claimed 201km/h top speed.

One equipment note on our own data. Our database has the Sealion 8 recorded as not having vehicle-to-load. BYD's own MY26 spec sheet lists V2L as standard on all three grades, so the manufacturer is right and our record is wrong. We have flagged it for correction rather than quietly publishing the version that suited the page.

Two completely different machines

The Sealion 8 Dynamic FWD pairs a 1.5-litre turbocharged petrol engine making 110kW and 220Nm with a 200kW front motor, for a combined 205kW and 315Nm and a claimed 8.6 seconds to 100km/h. The Model Y RWD is a single rear motor making 255kW and 340Nm and claims 5.9 seconds. The Tesla is the quicker car by nearly three seconds, and it is also 394kg lighter at 1,921kg against 2,315kg.

Step up the BYD range and the numbers flip hard. The Dynamic AWD and Premium AWD add a 200kW, 360Nm rear motor for a combined 359kW and 675Nm and a claimed 4.9 seconds, which is quicker than a Model Y Long Range. That performance costs $63,990 and $70,990 respectively, before on-road costs.

Range, and what the word means here

This is the part that trips people up. The Sealion 8 Dynamic FWD has 103km of electric range on the NEDC cycle from a 19.0kWh Blade LFP pack, and a 60-litre petrol tank behind it. The AWD grades carry a 35.6kWh pack for 152km NEDC. The Model Y RWD has 466km WLTP from a 60kWh LFP pack and no tank at all.

NEDC and WLTP are not the same test and NEDC is the more optimistic of the two, so treat the BYD's 103km as a best case and expect meaningfully less in real driving. On the other hand, the Sealion 8 never strands you: when the battery is flat it burns petrol, and BYD quotes 5.3L/100km with the battery below 25% on the FWD and 6.3L/100km on the AWD. With the battery topped up it quotes 1.1L/100km and 1.0L/100km respectively, which is a lab figure that only holds if you plug in constantly.

That is the real split. The Sealion 8 is brilliant if your daily drive fits inside its electric range and you charge every night, because you will barely touch the fuel pump. It is a heavy 2.3-tonne petrol SUV if you do not. The Model Y has one mode and does 466km of it. To see what either would give you on your own commute rather than on a test cycle, our range estimator will take the official figure and knock it around with speed, temperature and load.

Charging

Not close. The Model Y RWD takes up to 175kW on DC and has the Supercharger network behind it. The Sealion 8 Dynamic FWD peaks at 40kW DC, with the AWD grades at 74kW. Both cars sit at 11kW on AC.

In fairness, 40kW is less of a handicap on a plug-in hybrid with a 19kWh battery than it would be on an EV, because you are mostly charging at home overnight and the engine covers the rest. But it does mean the Sealion 8 is not a car you top up usefully on a highway stop. If your plan is to road-trip it, you are road-tripping on petrol.

The Sealion 8 is a big car: 5,040mm long, 1,996mm wide, 1,760mm tall on a 2,950mm wheelbase, with a 5.9m turning radius. The Model Y is 4,792mm long on a 2,890mm wheelbase. That is 248mm of length and, more to the point, a whole extra row of seats.

Boot space is where the two rows versus three rows trade-off gets real. The Sealion 8 gives you 270 litres behind the third row, 960 litres with row three folded and 1,960 litres maximum. The Model Y gives you 854 litres behind the rear seats plus a 117-litre frunk, and 2,138 litres with the seats folded.

Read those carefully. With everyone aboard, the Tesla has more than three times the luggage space of a seven-up Sealion 8. With the third row down, the BYD pulls ahead for everyday family loads. And with everything folded the Tesla is still slightly bigger. The Sealion 8's advantage is not cargo volume, it is the seats themselves. It also carries 655kg of payload on the FWD and tows 1,800kg braked, against the Model Y's 1,600kg.

Inside, the BYD is the busier and more traditionally equipped of the two. Every grade gets a 15.6-inch touchscreen, a 10.25-inch digital instrument cluster, a full-screen panoramic sunroof with an electric sunshade, three-zone climate control with second and third-row ceiling vents, ventilated and heated front seats and a 10-speaker system. The Premium AWD adds a 26-inch head-up display, a 21-speaker DiSound system, massaging outboard seats in the second row and electrically adjustable leg rests up front.

The Model Y goes the other way and puts almost everything on a 16-inch centre touchscreen, with an 8-inch screen for rear passengers and no instrument cluster at all. Whether that reads as clean or as austere is personal. What is not in dispute is that the Tesla cabin is quieter to look at and the BYD gives you more physical seats, vents and adjustment for the money.

BYD covers the Sealion 8 for 6 years or 150,000km, with the Blade battery for 8 years or 160,000km. Tesla covers the Model Y for 5 years with unlimited kilometres, with 8 years and 160,000km on the RWD battery, rising to 192,000km on the Long Range and Performance. As with most warranty comparisons, the answer depends on your annual distance: above roughly 25,000km a year the Tesla term is worth more, below it BYD's extra year is.

Running costs are where the two diverge hardest, and where it is easy to be sold a number that will not hold. The Sealion 8's headline 1.0L/100km is achievable only if you plug in constantly and your trips stay inside the electric range. Do that and it is astonishingly cheap to run. Fail to do it and you are looking at BYD's own charge-depleted figure of 5.3L/100km on the FWD, in a car that weighs 2,315kg, and you are paying for petrol you would not have bought in an EV.

The Model Y has no such cliff. It costs what electricity costs, which on a home tariff over 15,000km a year is a small number, and it has no oil, no filters, no spark plugs and no exhaust. The BYD still has an engine to service. On the other hand the BYD does not care if your apartment has no charger, and the Tesla very much does.

Depreciation is the unknown on both. The Model Y has the longer trading history in Australia and a deep used market to price against. The Sealion 8 is new enough that nobody has a reliable resale curve for it yet, which cuts both ways.