BYD’s relentless model range expansion could include a mid-size sedan and wagon with plug-in hybrid power.

The BYD Seal 6 has appeared in Australian Government approval documents, paving the way for its local launch.

Four variants appear in the Australian Design Rule certification documents: two sedans and two Touring wagons.

The entry-level version of each body style features a 70kW 1.5-litre four-cylinder engine and a 120kW electric motor, for a total system output of 130kW.

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Top-spec Seal 6s use a more powerful 160kW electric motor and a larger battery, with total output boosted to 163kW. All Seal 6s are front-wheel drive.

Braked towing capacity is 750kg across the range, while there’s a choice of 17- or 18-inch wheels.

While battery capacity isn’t listed in the documents, in the UK BYD advertises a choice of 10.08kWh and 19kWh lithium iron phosphate (LFP) batteries, the latter supporting 26kW DC fast-charging.

The Seal 6 sedan measures 4840mm long, 1875mm wide and 1495mm tall on a 2790mm wheelbase. The Seal 6 Touring has the same length, width and wheelbase, but is 1505mm tall.