Tony Kanaan put the #14 AJ Foyt Racing-Chevrolet on top in the final practice session for the Indianapolis 500, but Danica Patrick was able to complete only 15 laps after suffering an ECU problem.

With several drivers turning more than 40 laps and Graham Rahal making 51, Patrick managed by far the fewest, but could draw just a little consolation from eighth fastest.

Kanaan, meanwhile, turned 38 and on his 19th tour of the iconic 2.5-mile oval, he set a best of 227.791mph – more than 2mph faster than second fastest driver, his erstwhile teammate at Chip Ganassi Racing-Honda, Scott Dixon.

Marco Andretti was third fastest for Andretti Autosport-Honda, ahead of Sebastien Bourdais’ Dale Coyne Racing-Honda and the Carlin-Chevy of Charlie Kimball.

Defending Indy 500 winner Takuma Sato was P6 for Rahal Letterman Lanigan Racing-Honda ahead of the fastest of the Team Penske-Chevys, that of Will Power.

Patrick ended up a tad quicker than teammate Spencer Pigot in ninth, while Ed Jones Racing ensured both Ganassi entries were in the top 10.

Unlike in most previous Carb Days, pitstop practice was kept to a minimum, as most teams and drivers focused on resolving handling issues in the increasing temperatures. Sunday’s weather forecast suggests it will be 93°F ambient.

The Pit Stop Challenge will begin at 1.30pm.

Indy 500 Carb Day, final practice

Cla	#	Driver	Laps	Time	Gap	Interval	Mph
1	14	Tony Kanaan	38	39.5099			227.791
2	9	Scott Dixon	38	39.8787	0.3688	0.3688	225.684
3	98	Marco Andretti	30	39.9610	0.4511	0.0823	225.220
4	18	Sébastien Bourdais	43	40.0329	0.5230	0.0719	224.815
5	23	Charlie Kimball	42	40.0512	0.5413	0.0183	224.712
6	30	Takuma Sato	38	40.1637	0.6538	0.1125	224.083
7	12	Will Power	41	40.1889	0.6790	0.0252	223.942
8	13	Danica Patrick	15	40.2409	0.7310	0.0520	223.653
9	21	Spencer Pigot	45	40.2534	0.7435	0.0125	223.584
10	10	Ed Jones	44	40.2583	0.7484	0.0049	223.556
11	64	Oriol Servia	41	40.2618	0.7519	0.0035	223.537
12	24	Sage Karam	48	40.3085	0.7986	0.0467	223.278
13	33	James Davison	35	40.3152	0.8053	0.0067	223.241
14	20	Ed Carpenter	30	40.3191	0.8092	0.0039	223.219
15	1	Josef Newgarden	47	40.3252	0.8153	0.0061	223.186
16	60	Jack Harvey	38	40.3410	0.8311	0.0158	223.098
17	3	Helio Castroneves	48	40.3745	0.8646	0.0335	222.913
18	29	Carlos Munoz	49	40.3946	0.8847	0.0201	222.802
19	7	Jay Howard	48	40.4122	0.9023	0.0176	222.705
20	22	Simon Pagenaud	36	40.4332	0.9233	0.0210	222.589
21	15	Graham Rahal	51	40.4448	0.9349	0.0116	222.526
22	32	Kyle Kaiser	38	40.4706	0.9607	0.0258	222.384
23	26	Zach Veach	39	40.5241	1.0142	0.0535	222.090
24	66	J.R. Hildebrand	25	40.5356	1.0257	0.0115	222.027
25	88	Gabby Chaves	40	40.5476	1.0377	0.0120	221.961
26	28	Ryan Hunter-Reay	38	40.5558	1.0459	0.0082	221.916
27	6	Robert Wickens	30	40.5732	1.0633	0.0174	221.821
28	4	Matheus Leist	37	40.5773	1.0674	0.0041	221.799
29	25	Stefan Wilson	48	40.5839	1.0740	0.0066	221.763
30	19	Zachary Claman De Melo	25	40.6188	1.1089	0.0349	221.572
31	59	Max Chilton	44	40.6429	1.1330	0.0241	221.441
32	27	Alexander Rossi	29	40.6552	1.1453	0.0123	221.374
33	17	Conor Daly	35	40.9636	1.4537	0.3084	219.707