Despite a lack of heavy incentives, new models or ‘green’ cars such as hybrids and diesels, Subaru's sales continue to rise while many of its rivals struggle to stay afloat - especially in the volatile U.S. market. The carmaker has experienced sales growth of close to 4.5% for the first half of 2008 and this figure is expected to continue in its current trend with North American sales expected to hit the 200,000 unit mark – up from 187,208 units last year.

The replacements for the Impreza and Forester are playing a large role in the brand's success, especially Subaru's decision to lower the price of the Impreza by $500 compared to the 2008 model and reducing the Forester's price by $1000. However, a range of new models, including a more powerful Impreza WRX for the 2009 model year (pictured), are expected to boost the carmaker’s sales figures even higher.

While Subaru has no plans to bring any of its smaller Japanese models to North America, the carmaker is planning a raft of new model introductions beyond the recent Forester and Impreza updates, reports Automotive News.

For the 2009 model year Subaru is introducing a 265hp (198kW) version of the WRX, with updated styling and a refreshed interior. The latest version will remain on sale relatively unchanged until an all-new version arrives in 2012. That same year will also see the introduction of a redesigned Tribeca SUV.

Before that, Subaru is expected to launch its next-generation Legacy (Liberty) and Outback models. Due in 2010, the new car will offer slightly more power and space but will be instantly recognizable as a Legacy. In 2011 Subaru and Toyota will reveal their jointly-developed sports car. The front-engined, RWD sports car will arrive as a 2012 model and will likely be sold in both Toyota and Subaru versions.

Other projects the carmaker is working on include the development of all-electric models as seen in the recent Stella Concept. Cars with hybrid powertrains are also under development with significant input from Toyota, who also owns a share of Fuji Heavy Industries, the parent company of Subaru.