HRGs were entered in significant numbers in British club level competition events from 1935 until well into the post war period. Their engineering qualities meant that there was no limit to the form of competition they could excel at: everything from road races and rallies to hillclimbs, speed events and trials.
In addition to British club level competitions they were also widely used in professional level racing not only in Britain but also on the Continent and as far afield at the USA and South America. The success of HRG cars at this level of competition is remarkable when you consider that, unlike most manufacturers of similar sports cars, the factory never ran a factory team. The competitive successes of HRGs are, therefore, a testament to the quality of the cars sold to the public by the factory and the competition skills and dedication of their owners and drivers in all forms of motorsport.
Listed below are a selection of HRG class victories in major international competition events in period.
Notable Events and Results in H.R.G cars in the period 1935 to 1956
Circuit Racing:
| Le Mans 24hrs |
Class wins in 1939 and 1949, 2nd in class 1937 & 47 |
| Spa-Francorshamps 24hrs |
Coupe du Roi team prize 1948. Class win, Coupe de la Victoire, Coupe de Richard Seaman and Coupe du Roi team prize in 1949 |
| Brooklands |
Many short scratch and handicap races incl. class winner in 3 hr Sports Car Race 1938 |
| Donnington |
12 hours Sports Car Race 4th overall 1937 and RAC Tourist Trophy in 1937 & 38 |
| Eifelrennen, Nurburgring |
1938 & 1939 |
| Gransden Lodge |
The very first post was GB race meetings 1946 & 47 |
| Chimay |
Grand Prix des Frontieres, 1947 & 48 |
| Monthery, Paris |
12 hour race 1948 |
| Isle of Man |
Brtitish Empire Trophy Manx Cup 1947, 48, 49 & 50 and team prize in 1948 |
| Silverstone |
Daily Express Trophy Production Sports Car in 1948 & 49 (first post-war meetings at Silverstone). Race Class wins in 1949 & 50, and 6hr Relay in 1951, 52 & 53 |
| Goodwood |
First Members meeting in 1948, Members and Easter Meetings 1948 to 1955, 9 hour Races 1952, 1953 & 1955. |
| Blandford |
National Road Races (first circuit after WW2) 1949 2nd in Class and 1950 2nd in Class |
| Bridgehampton (USA) |
1949, 1950 & 1951, 3rd overall 1949. |
| Watkins Glen (USA) |
4th Overall 1949 |
| Sebring (USA) |
1950 |
| Jersey |
International Road Race 1952 |
| Crystal Palace |
1952 & 1953 |
| Brands Hatch |
Kent Cup Race 1954 |
| Oulton Park |
British Empire Trophy 1955 & 1956 |
|
|
Also acheived 3rd place overall in the 1956 Autosport Production Sports Car Championship including class wins at Mallory Park, Brands Hatch, Oulton Park and Goodwood

Endurance Rallying:
| RAC Rally | Class wins 1939, 1951 & 1953, 2nd in Class 1937 & 1938. |
| Alpine Rally | Class wins, Coupes des Alpes 1948 & 1951. Team awards 1948. Several special stage awards. |
| Brooklands | JCC Brooklands Rally 1st in Class 1937 |
| Monte Carlo Rally |
1937 |
| Paris-Nce Trial |
Class win 1938 |
| Eastbourne Rally |
1951 |
| Paris - St Raphael Rally |
Class win 1952, 2nd in Class 1951. |
|
|

Speed Hill climbs and Sprints:
H.R.G cars competed in, and won many awards at speed events in Great Britain, especially in the immediate post war period. These included Shelsey Walsh, Prescott (including the first ever meeting in 1938), Bo’ness, Brighton, Great Auclum, Lewes and Blackwell amongst many others.

Reliability Trials and Production Car Trials:
H.R.G cars competed in many events in the late 1930s into the 40s and 50s. Over 200 awards in the three MCC Classic Trials (The Land’s End, Exeter and Edinburgh Trials) alone as well
as several team and “triple” awards.
