Lacazette fired the Gunners ahead in the eighth minute after poor defending by the home side before new signing Gabriel made it 2-0 in the 49th and Aubameyang put the icing on the cake with a superb shot into the top corner.
Tottenham Hotspur beat local rivals Arsenal with second-half goals from prolific pair Dele Alli and Harry Kane on Sunday to maintain their Premier league title challenge.
A round-up of the action in the English Premier League on Monday.
IMAGES from EPL matches played on Sunday.
Manchester United's Zlatan Ibrahimovic and Bournemouth defender Tyrone Mings were charged with violent conduct by the Football Association on Monday.
Images from the English Premier League matches played on Saturday.
Both Harry Redknapp and Arsene Wenger have paid the price for leaving it too late, offloading a lot of key players at the EPL transfers, says Manu Shankar.
Arsenal's inability to kill off the contest will be a frustration as that has been a hallmark of their recent form. They had won their previous 18 Premier League matches in which they scored first.
Ronaldo's behaviour on Wednesday drew criticism, with former United goalkeeper Peter Schmeichel saying the 37-year-old has become a distraction at Old Trafford.
IMAGES from the English Premier League matches played on Wednesday
IMAGES from the English Premier League matches played on Sunday.
IMAGES from the English Premier League matches played on Saturday.
Haaland effectively put the game to bed early in the second half with a simple finish, before taking his league tally to 20 for the season in the 64th minute.
IMAGES from EPL matches played on Saturday.
Key moments in Chelsea's Premier League title-winning season.
English Premier League coaches will train their young Indian counterparts as part of a skill-development programme.
Chelsea manager Thomas Tuchel and his Tottenham Hotspur counterpart Antonio Conte have been charged by the Football Association (FA) following their confrontation after Sunday's heated Premier League draw at Stamford Bridge.
Spanish playmaker Santi Cazorla scored a hat-trick as Arsenal stylishly dismantled bottom club Reading 5-2 to move up to fifth in the Premier League on Monday.
Tite likes Tottenham striker Richarlison, saying "he only has eyes for the goal" while Gabriel Jesus, who failed to score in five appearances at the 2018 World Cup, appears to now be vying with the likes of Raphinha and Antony for a wide role in the Selecao.
IMAGES from the EPL matches played on Saturday.
IMAGES from the EPL matches played on Sunday.
Match-by-match facts and statistics ahead of the first round of Premier League fixtures from August 5-7 (all times IST).
Some English clubs may consider vaccine status of transfer targets
Arsenal dominated the opening period in the Villa Park sunshine.
Premier League Chief Executive Richard Scudamore told Sky Sports News a decision on the remainder of the weekend's topflight fixtures would be made at 1800 local time on Thursday.
Brighton & Hove Albion's match against Crystal Palace on Saturday will also remain postponed.
A striker was the need of the hour for Wolves, who have scored only three goals in six league games -- the least among all 20 teams.
Chelsea manager Jose Mourinho paid tribute to Fernando Torres after the Spain striker made one goal and scored a late winner to earn a 2-1 victory over Premier League title rivals Manchester City on Sunday.
Ronaldo was an unused substitute as United produced arguably its most complete performance of the season. The 37-year-old has scored just two goals in 12 appearances for United this season.
IMAGES from the English Premier League matches played on Wednesday.
Chelsea, who beat Leicester City 2-0 at Stamford Bridge with goals from home debutant Diego Costa and Eden Hazard, and Swansea City, who sank Burnley 1-0 at the Liberty Stadium, head the early season standings with six points.
Chelsea have topped the spending list with Manchester United not far behind, but West Ham United's business epitomises the TV riches which give all Premier League clubs spending power that only the elite teams in Spain or Germany can dream of.
Midfielder Jordan Henderson's fluke second-half goal kept Liverpool firmly in contention.
Juan Mata scored on his Chelsea debut in a 3-1 home win over promoted Norwich City while Jordan Henderson and Charlie Adam netted their first Liverpool goals in another 3-1 triumph over Bolton Wanderers on Saturday.
Preview and timings of the Premier League matches this weekend
"The best team won, we struggled from the beginning and we couldn't deal with their long balls. Usually, you press the ball to win it, but this was different. They defended so deep and so well," City coach Pep Guardiola told the BBC.
IMAGES from the English Premier League matches played on Sunday
Erling Haaland and Phil Foden scored hat-tricks to fire champions Manchester City to a rampant 6-3 thrashing of local rivals Manchester United in the English Premier League on Sunday.
United, who had Nemanja Matic sent off for a second bookable offence in injury time, had an early effort from Alexis Sanchez disallowed for offside but soon took command via a scrappy 35th-minute effort from Romelu Lukaku and a superb left-foot volley from Chris Smalling three minutes later.
Chelsea manager Avram Grant has made a stinging attack on EPL referees, saying they helped Manchester United win the title.