"Our health sector (once) operated in a regional and international context that was free of the illegal sanctions which weigh us down today," Mugabe said in a ceremony to give 450 cars to senior and middle-level doctors at government hospitals.
Mugabe promised the doctors houses and said he had used his pocket money to buy 300 flat screen televisions for hospitals.
In a procedural move, he told his ministers the cabinet had been dissolved ahead of the election.
"I told them that some would return to government, others will be left behind," Mugabe told a rally in the town of Bindura, 70 km (44 miles) northeast of Harare.
Mugabe has also handed out farm equipment and public buses in what critics say is an attempt to win political favour ahead of the vote in a country where many can no longer afford even basic needs and food and fuel are in short supply.
Nurses and doctors have been on strike to demand more pay and state workers were promised higher salaries by Mugabe in the campaign, but inflation of more than 100,000 percent quickly makes pay rises meaningless.
Critics say Mugabe's policies, particularly seizing white-owned farms to give to landless blacks, have led to ruin.
Saturday's presidential, parliamentary and local council polls are seen as the most important since Zimbabwe's independence from Britain in 1980, but few expect a fair vote.
Mugabe, who must win more than half the presidential vote to avoid a second round run-off that might unite his opponents, rejects accusations of rigging three elections since 2000.
Tsvangirai told a rally in Chitungwiza, just outside Harare, that Mugabe had lost touch with reality.
"So when you vote, don't leave the polling station, we want to see how he will steal," he said. "What Mugabe does not realise is that his system has collapsed."
