How much horsepower does the Mark II engine have?
There isn’t a single horsepower figure for a “Mark II” engine. The Jaguar Mark II’s 3.4 L and 3.8 L inline-sixes deliver roughly 210–250 hp, while the Toyota Mark II’s common 2.5 L engines range from about 200–210 hp in naturally aspirated form to about 276–280 hp in turbocharged variants.
Understanding the Mark II engine families
The phrase “Mark II engine” refers to different cars across decades and regions. Below are the two most prominent interpretations with typical horsepower figures for their main engine configurations.
Jaguar Mark II (1959–1967)
The Mark II from Jaguar used variants of the XK inline-six, with two common displacements offered for markets around the world.
Below are the best-known horsepower figures by engine variant. These reflect typical ratings from the era (DIN or similar) and can vary by tuning, carburetion, and market.
- 3.4-liter inline-six: approximately 210–220 hp
- 3.8-liter inline-six: approximately 220–246 hp
In practice, owners and restorers often cite a broad range due to differences in carburetion, emissions controls, and the era’s measurement standards. The 3.8 L tends to be the higher end of the range, especially in later, more performance-oriented configurations.
Toyota Mark II (late 1990s–present in some markets)
The Toyota Mark II evolved into modern, more powerful variants in markets outside the United States, with the 2.5-liter inline-six family being the core of many late-20th-century sedans.
Representative horsepower figures for the main engine options include:
- 1JZ-GTE 2.5-liter turbocharged inline-six: 276–280 hp (about 276 hp SAE; 280 PS)
- 1JZ-GE 2.5-liter naturally aspirated inline-six: about 200–210 hp
Turbocharged versions deliver a noticeable boost over naturally aspirated engines, and horsepower can vary slightly by market regulations and model year.
Summary
In short, the Mark II engine’s horsepower depends on which Mark II you mean and which engine it used. Jaguar’s Mark II offered roughly 210–220 hp for the 3.4 L and 220–246 hp for the 3.8 L. Toyota’s Mark II commonly used a 2.5 L family with around 200–210 hp in NA form and about 276–280 hp in turbocharged variants. Always check the specific year, market, and configuration for the exact figure.
