In brief: the 2015 Civic uses a 1.8-liter inline-4 for most trims, while the Civic Si model uses a 2.4-liter inline-4; the 1.8L produces about 143 horsepower and 125 lb-ft of torque, and the 2.4L produces about 205 horsepower and 174 lb-ft of torque.
Beyond the numbers, the 2015 Civic, part of Honda’s ninth generation, was designed to balance everyday usability with efficiency. The engine you get depends on the trim badge: standard Civics typically run on the 1.8L, while the sportier Si variant upgrades to a larger 2.4L. The following outlines the two engines you’d find in the 2015 lineup.
Engine options for the 2015 Civic
The two engine choices that powered the 2015 Civic lineup, and which trims commonly featured each.
- 1.8-liter inline-4 i-VTEC (R18Z1) — 143 horsepower and 125 lb-ft of torque (approximately 6,500 rpm and 4,600 rpm, respectively). This engine powered the majority of non‑Si Civics in 2015, emphasizing smooth performance and efficiency.
- 2.4-liter inline-4 i-VTEC (K24Z7) — 205 horsepower and 174 lb-ft of torque. This higher-output engine is used in the Civic Si, delivering the model’s performance edge.
The 1.8L powerplant served as the standard choice for most trims, while the 2.4L engine was reserved for the performance-oriented Si, providing significantly more horsepower and torque for enthusiasts.
Notes on market variations
Engine availability can vary by market and model year nuance. In North America, the two-engine pattern described here was standard for the 2015 Civic lineup, with the Si receiving the higher-output 2.4L. Always verify the exact engine by checking the badge or VIN when evaluating a used example.
Summary
For 2015, Honda offered two engines in the Civic lineup: a 1.8-liter i-VTEC inline-4 for efficiency-focused trims and a 2.4-liter i-VTEC inline-4 for the performance-focused Civic Si. The Si’s engine delivers notably higher horsepower and torque, creating a clear performance tier within the same model year.
Which engine is better, 1.5 or 2.0 Honda Civic?
The 1.5L turbocharged 4-cylinder engine leads in both power and fuel efficiency. This is because turbocharged engines feature an internal fan and cooling system that keeps the engine at an optimal temperature during peak performance. It gives the engine that added boost while reducing the risk of overheating.
What engine is in my 2015 Honda Civic?
The 1.8L four-cylinder engine under the hood features a SOHC i-VTEC design that helps account for the 143 hp and 130 lb-ft of torque each Civic is capable of.
Which is better, city or Civic?
If you need an efficient and affordable vehicle, the City makes a lot of sense. If you want a sedan that's fun to drive and loaded with features, the Civic is worth the upgrade. If you want a sedan that's fun to drive and loaded with features, the Civic is worth the upgrade.
What are the most common Civic repairs?
In a nutshell: The Honda Civic is generally a very reliable family car, with newer models performing especially well in owner surveys. Common problems include brake wear, minor electrical faults and, on some 2017-2022 1.0 VTEC Turbo models, wet belt-related engine issues that can become expensive if ignored.