Wesfarmers has recorded another strong quarter of sales growth for Coles, and its discount department stores have also started reporting a modest sales increase.
The conglomerate's food and liquor division saw sales rise 5 per cent in the 14-week period to December 30, compared to the same period a year earlier.
The company's convenience division, which includes its petrol business, saw sales up 5.8 per cent.
In total, the Wesfarmers-owned supermarket, liquor, convenience and petrol business made almost $9.9 billion in sales during the quarter.
Wesfarmers chief executive Richard Goyder says the result is the latest in a long run of growth for the supermarket business.
"The December quarter represented the 15th consecutive quarter of growth in comparable sales and sales density," he noted in the report.
Wesfarmers has reported that food and liquor price deflation eased, with fresh food prices falling less than previously, but it says prices still declined by an average of 0.9 per cent in the quarter.
The company says it sold 4.4 per cent more fuel in the December quarter this year than last, with customers responding to its supermarket fuel discount campaigns.
The Bunnings hardware chain also continued its strong sales growth, with a 6.6 per cent increase in quarterly sales taking its revenue to $2.2 billion for the 14-week period.
There was also a less spectacular, but positive, result for the Kmart discount department store chain, which saw sales rise 3.8 per cent to $1.4 billion.
However, the conglomerate's other discount department store group, Target, continued to struggle, with sales up a very modest 0.6 per cent.
The company's Officeworks business also stagnated, with sales up just 0.3 per cent despite the opening of four new stores.
Wesfarmers blames the glacial sales growth at both Officeworks and Target on continued deflation in technology product prices.
Investors have given the sales result a cool welcome, with Wesfarmers shares down 1.4 per cent to $38.27 by 11:36am (AEDT) in a generally rising market.