This competent rear-wheel-drive model lacks the overall dynamic prowess of the BMW 528i and Mercedes-Benz E320.
A smooth, powerful 3.0-liter Six and five-speed automatic transmission are the GS300's best features.
The ride isn't as supple as that of competing Audis, BMWs, and Mercedes-Benzs, however, but the interior is extremely quiet.
Handling is competent but unexceptional.
The brakes are excellent.