The motor dealer – which operates from Dunfermline, Glasgow, Hamilton and Paisley, under the Macklin Motors badge in Scotland – reported a near 15% rise in revenue from £547 million to £628.1m.
For the six months to August 31, pre-tax profits accelerated almost 27% from £4.1m to £5.2m.
New car sales increased from 9422 to 10,749, with used vehicles rising from 19,780 to 22,679.
Fleet and commercial sales also improved from 8736 to 10,090, with motability going from 3612 to 3803.
Robert Forrester, chief executive, said: "The group has delivered an excellent profit performance for the first half of the financial year with strong growth compared to the prior year.
"Market conditions have improved and this is reflected in higher sales volumes in both new and used cars. The group's aftersales strategies are now consistently delivering growth of revenues and profits in the service area.
"In addition, businesses acquired in recent years are delivering on their growth potential and producing improving returns.
"We have acquired a further 10 outlets and we now operate 86 sales outlets from 70 dealership locations.
"With our strong balance sheet, the group continues to execute its growth strategy and further acquisition opportunities are being actively progressed. This, coupled with the turnaround strategy that we implement following the acquisition of new businesses, will continue to underpin shareholder value growth."
Analysts from Vertu's house broker Panmure Gordon said: "The consistency of delivery across all parts of the business both from an underlying and integration perspective remains impressive, cash generation remains strong and the progressive dividend policy firmly intact.
"Vertu should also benefit from a robust used car market in the short term, while the problems in the eurozone will continue to provide good profit opportunities for the group, providing it maintains its pricing discipline, which we believe it will given its track record."
Vertu said it now operates 86 sales outlets from 70 dealership locations representing brands including Nissan, Ford, Suzuki, Honda, Fiat, Peugeot and Hyundai.
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