2018 VW Beetle and Beetle Convertible US Spec

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Published on November 23, 2017 1:49:24 AM ● Video Link: https://www.youtube.com/watch?v=T1VkGBc93KA

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All 2018 Beetle models, both convertible and coupe, are powered by Volkswagen’s most advanced EA888 engine ever.

The changes in the new version of the EA888 advance the twin goals of power and efficiency. The peak 174 horsepower kicks in at 4,400 rpm, 400 revs sooner than in the 1.8-liter edition, and maintains its output until 6,000 rpm. Maximum torque of 184 lb-ft is achieved at 1,600 to 3,940 rpm. As in the previous 2.0-liter TSI engines, the increased displacement comes solely from a longer piston stroke (92.8 mm vs. 84.1 mm in the 1.8 TSI), while the compression ratio rises to 11.7:1 due to a modified piston crown and combustion chamber. New TSI injectors can push fuel into the cylinder at a higher maximum pressure (250 bar or 3,626 psi), with up to three injection sequences per stroke depending on conditions.

The new EA888 retains many key features of its predecessors, from chain-driven double overhead camshafts to the twin balance shafts that not only counteract second-order internal forces but provide oil scavenging and crankcase breathing pathways. A new engine management system with four core processors monitors the system and adjusts as needed. Reducing friction was another goal for this engine. For instance, the lower brake mean effective pressure at full load in this engine allowed the crankshaft main bearing diameter to be reduced from 52 to 48 mm, while the balance shaft chain is narrower.

The EPA-estimated fuel economy rating is 26 mpg city, 33 mpg highway and 29 mpg combined for S, SE and Coast models. Beetle Dune models have EPA-estimated fuel economy of 26/34/29 respectively.

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