SEAL 6 Touring Boost vs EV6 Air: UK estate and charging choice

The UK SEAL 6 DM-i Touring Boost is a front-wheel-drive plug-in hybrid estate. Its official leaflet lists a 1.5-litre petrol engine, a 10.08 kWh Blade LFP battery and 135 kW total system maximum power. The battery figure is not labelled gross or usable. This is not the SEAL 6 saloon, the SEAL U SUV or the Touring Comfort with its larger battery.

The selected Kia is the Air 84.0 kWh, 225 bhp rear-wheel-drive EV6 on 19-inch wheels. Its current UK price and specification tables identify that derivative, rather than a smaller-battery overseas model or a GT-Line S with additional equipment. Both brands provide current UK sales or dealer-enquiry routes; that does not reserve a particular car, colour or delivery slot.

Keep Boost and Air on the orders; higher-grade comfort and camera equipment is not included automatically. If a replacement must arrive before a lease return or holiday, establish that timing before selling the existing car. A model shown in an advertisement may have equipment that the selected entry grade does not receive.

BYD’s leaflet declares 500 litres with the load height limited by the rear-seat headrests, 675 litres to the headlining and 1,535 litres with the seats down. Its launch release describes 500 litres loading to the parcel shelf. These are declared limits, not interchangeable volumes for the same loading line. The Touring has a split-folding rear bench and an electric tailgate across the two UK grades.

Kia’s table gives 490 litres behind the rear seats without premium audio, or 480 litres with it, and a separate 52-litre front compartment on the rear-drive car. Air has six-speaker audio; the Meridian system belongs to GT-Line S. The extra front space may help separate small items, but it does not make the rear opening larger. Try the same luggage with every required passenger seat available; declared litres do not establish a common measurement or fit.

Boost includes powered front-seat adjustment, a 12.8-inch centre screen, vegan-leather upholstery and six speakers. Heated and ventilated front seats, the heated wheel, panoramic roof, front sensors and 360-degree camera belong to Comfort rather than Boost. Air uses cloth and artificial-leather upholstery with manual front-seat adjustment. Kia’s selected-grade table gives it front and rear parking sensors and a reversing camera, but reserves the 360-degree view for GT-Line S.

A powered driver’s seat may matter when different people share the Touring; Air’s front parking sensors may matter more in a tight bay. Have both drivers set their positions, check rear passenger space behind them and try the camera view. Do not replace that demonstration with a count of features. For the tailgate, confirm reach and clearance in the parking position; Air’s smart power tailgate is not standard.

The Touring leaflet’s Boost column specifies Type 2, a 3.3 kW AC maximum and three hours from 15 to 100 per cent using the stated single-phase supply. The DC power and time entries are dashes. Comfort’s 6.6 kW AC, CCS2 and 26 kW DC figures must not be carried into a Boost order. A public rapid-charging stop is therefore not the way to replenish this selected car.

This makes dependable charging where the estate spends time especially relevant. Assess the actual supply and installation with a qualified installer, confirm the cable supplied and think about how often you will connect it. A larger wallbox rating cannot make the Boost accept the Comfort’s power. If the battery cannot be replenished regularly, evaluate the car as a petrol-using hybrid for much of its work.

Kia lists seven hours and 35 minutes from 10 to 100 per cent on an 11 kW three-phase charger. The DC table gives 18 minutes from 10 to 80 per cent on the stated high-power station; the charging footnote requires an 800 V charger delivering at least 260 kW and warns about battery temperature and weather. That station requirement is not itself a declared peak rating for the car.

The AC session windows and supplies differ; the Boost has no DC session to compare with the Kia’s. They do not show that the Kia costs more or less to charge. For an EV6 road trip, choose usable stops on the route, check access and have a fallback. For the Boost, plan regular AC replenishment and petrol when required; there is no selected-car DC time to place beside Kia’s 18 minutes.

Boost’s selected figure is 31 miles combined WLTP electric-only, with 47 miles on the separate city cycle. Its 839-mile combined petrol-and-electric reference is not electric range, a promise of one uninterrupted journey or evidence that the car costs less to run. The Touring Comfort’s 62-mile combined electric reference is a different battery selection.

Air’s 361-mile combined WLTP reference is battery-electric range. Kia also publishes a longer city-cycle figure, but it is not a substitute for the combined figure when planning mixed travel. The PHEV figure is electric-only, not its petrol-and-electric total; neither figure is a measured winter journey. Heating, weather, speed, load and route can all change the distance before replenishment.

Write down an ordinary week, including the detours and the longest day, rather than choosing against a single commute distance. If regular travel consumes more than the Boost can supply electrically, expect petrol use instead of assuming the engine will remain off. If the EV6 makes the weekly routine electric but requires a planned holiday stop, decide whether that trade suits the household.

BYD separately prints 58.9 mpg combined and 108.6 mpg weighted combined for Boost. The weighted result reflects the plug-in test procedure; it is not a forecast for a long petrol journey with a depleted battery. We have no matched fuel, electricity-tariff or loaded-route test from which to calculate a running-cost winner.