2018 Aston Martin V8 Vantage Spied, Has Mercedes-AMG M178 4.0 Twin-Turbo V8

Now that the Aston Martin DB11 has successfully replaced the long-lived DB9, the British manufacturer is back to the drawing board. The next car in line for a major refresh is the Vantage. More to the point, the V8-powered Aston Martin Vantage. At first glance, the test mule caught by the carparaz…