The 2018 Chevrolet Impala full-size sedan did not see a high-performance SS variant. Instead, it offers two gasoline engines — a 2.5L four-cylinder as standard and a 3.6L six-cylinder as the most powerful offering.
| Engine | Cylinders | Displacement | Aspiration | Fuel Type | Features | Power @ RPM | Torque @ RPM | Transmission |
|---|---|---|---|---|---|---|---|---|
| LCV | 4 cylinder | 2.5L | Naturally Aspirated | Gasoline | DOHC with Direct Injection, Variable Valve Timing (VVT) and auto stop/start | 197 hp (147 kW) @ 6300 rpm | 191 lb-ft (258 Nm) @ 4400 | 6-speed automatic MHG |
| LFX | 6 cylinder | 3.6L | Naturally Aspirated | Gasoline | DOHC with Direct Injection and Variable Valve Timing (VVT) | 305 hp (227.4 kW) @ 6800 rpm | 264 lb-ft (356.4 Nm) @ 5200 rpm | 6-speed automatic M7W |
2018 Chevrolet Impala
2016 Chevrolet SS Sedan is commonly mistaken for an Impala SS
What’s more, Chevrolet will no longer offer the SS Performance Sedan (pictured above) after the 2017 model year. The Chevy SS Sedan is often incorrectly referred to as the Impala SS, despite the two vehicles being completely unrelated.
As such, a full-size, high-performance sedan is not part of the Chevy lineup for the 2018 model year. However, the brand continues to offer two high-performance two-door vehicles — the Camaro and Corvette.
