Tata Motors appears to have succeeded in large part because it did not seek to run Jaguar Land Rover from Tata headquarters here. Instead, it has left day-to-day management in the hands of executives in England. It also benefited from projects started under Ford ownership, including the Evoque, which has won fans, including the exacting hosts of the BBC show “Top Gear” and the Chinese nouveau riche.

In its last fiscal year, which ended in March, Jaguar Land Rover posted a 27 percent jump in retail sales, to 306,000 vehicles, and became the primary driver of growth and profit for Tata Motors. The Indian car and truck business of Tata has stagnated in the same time because of a slowing domestic economy and a weak product lineup that includes about a dozen passenger cars. Sales of Tata cars were up an anemic 4 percent in the previous fiscal year.

Analysts said that barring a global economic recession, they expected Jaguar Land Rover to continue to do well because it was about to release several new models, including a redesigned version of its flagship Range Rover and the F-Type.

“I think people were a bit skeptical and snobbish and maybe had some old colonial hangover,” Tim Urquhart, a senior analyst at IHS Automotive in London, said about the initial doubts about the acquisition. But he added, “If you look at Land Rover and Jaguar now, they probably have the strongest product line in their recent history if not ever.”

Tata’s takeover of Jaguar Land Rover did not always look promising. The financial crisis hit soon after the deal closed, and demand for luxury cars tumbled in Europe and North America — its two biggest markets. Struggling with a $3 billion debt it took on to pay for the deal, Tata Motors was forced to put more money into the company after it failed to secure financial aid from Britain.