The BMW 6-Series may not be renewed for another generation it seems. According to our spies, the automaker is apparently busy testing an upcoming replacement for the said nameplate.

While the name remains a mystery, the upcoming two-door appears to have styling cues from the current 6-Series with its long hood and short deck design. It also appears smaller than the outgoing 6-Series. Up front, both the hardtop and soft-top get the same front fascia with the brand's signature dual kidney grill and dual headlight design.

Spied: BMW to replace the 6-Series with new two-door model?

The two cars also have a sloped roofline that is then accented by muscular rear quarter panels that seamlesly connect with the trunk and bumper. Also curious to see on the alleged 6-Series successor are black side mirror caps though these might have been borrowed from a different model altogether.

Front fascia of the purported BMW 6-Series successor in coupe form

The taillights are indistinguishable from any current BMW model though the brand is known for using faux taillights when testing prototypes. Topping it all off are the large exhaust pipes that exit through the rear bumper.

Rear of the alleged BMW 6-Series successor (hardtop)

Interior and powertrain details of the supposed 6-Series replacement are not yet known but it is highly likely that a range of TwinPower Turbo six-cylinder engines will be available for the upcoming model.