We’ve seen the G21-generation BMW 3 Series Touring once before, though here our spy photographers have managed to capture images of the junior station wagon’s interior. The car appears similar to its previous sighting, where it was equipped with the M Sport bodykit that boasts of a deep, wide front intake with smaller ones at each corner. A similar treatment for its side profile and rear-end make a reappearance here.

The interior corresponds with what we’ve seen within the G20 sedan, which includes usage of a common gearlever, steering wheel, instrument cluster and infotainment display. Where the G21 will be differentiated from its sedan sibling is in the rear quarters, though images of this section haven’t surfaced just yet.

Otherwise, the forthcoming 3 Series station wagon will employ a front occupant cabin that is basically identical to its three-box shaped stablemate, and technical specifications should be close, too. Powertrain options for the G21 should mirror that of the G20 sedan, with the full complement of petrols and diesels expected to pair with both rear- and all-wheel drive layouts.

Range-topping BMWs have historically omitted a full-on M model save for the E61 M5, and here the same is expected. Once again blue brake calipers feature, which may be a telltale sign of an M Performance model; this could take the form of the marque’s 360 hp/500 Nm 3.0 litre turbo six petrol, the 326 hp/680 Nm turbo six diesel, or both. With the G20 sedan slated for debut later this year, the G21 wagon can be expected for 2019.