Understanding the pyrolysis of ethane over an extended pressure range can help improve the understanding of the pressure dependence of pyrolysis of higher alkanes. For this work, a variable pressure flow reactor was operated at 1073 K at pressures of 0.1 and 2.0 MPa to gain insight into the effect of pressure on the rate of ethane decomposition and formation of the major products and deposit precursors, such as benzene and toluene. Ethane conversion was achieved by sweeping through residence times over a range from 0.2 to 6 s at 0.1 MPa and from 2 to 30 s at 2.0 MPa. The results showed that, at higher pressure, more ethane is converted to benzene and toluene, species that readily lead to deposit formation; additionally, at an elevated pressure, the selectivity of hydrogen, ethylene, and methane is significantly affected. The experimental results were compared to several chemical kinetic mechanisms to gauge the performance of the mechanisms under the various test conditions. A mechanistic analysis showed that the variation in the selectivity of the products as a result of pressure was in large part due to the shift in the kinetics of ethyl radicals: unimolecular beta-scission dominated at lower pressures, while bimolecular addition and abstraction reactions become important at high pressures.