Development work continues on the 2015 BMW 1-Series as our spies have snapped new pictures of the three- and five-door hatchback.

Development work continues on the 2015 BMW 1-Series as our spies have snapped new pictures of the three- and five-door hatchback.

Recently caught undergoing testing, the facelifted model has an evolutionary design but adopts a new front fascia with a revised grille and restyled headlights. The styling changes are less noticeable out back but appear to include a modified bumper and updated taillights.

Engine options will likely carryover but they could receive minor upgrades for improved performance and increased fuel efficiency.

BMW has been relatively quiet about the facelifted 1-Series but it could be introduced later this year or possibly early next year.

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2015 BMW 1-Series facelift spied with more traditional styling